| File: | src/usr.bin/vi/build/../ex/ex_subst.c |
| Warning: | line 1097, column 9 Dereference of null pointer |
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| 1 | /* $OpenBSD: ex_subst.c,v 1.31 2023/06/23 15:06:45 millert Exp $ */ | |||
| 2 | ||||
| 3 | /*- | |||
| 4 | * Copyright (c) 1992, 1993, 1994 | |||
| 5 | * The Regents of the University of California. All rights reserved. | |||
| 6 | * Copyright (c) 1992, 1993, 1994, 1995, 1996 | |||
| 7 | * Keith Bostic. All rights reserved. | |||
| 8 | * | |||
| 9 | * See the LICENSE file for redistribution information. | |||
| 10 | */ | |||
| 11 | ||||
| 12 | #include "config.h" | |||
| 13 | ||||
| 14 | #include <sys/queue.h> | |||
| 15 | #include <sys/time.h> | |||
| 16 | ||||
| 17 | #include <bitstring.h> | |||
| 18 | #include <ctype.h> | |||
| 19 | #include <errno(*__errno()).h> | |||
| 20 | #include <limits.h> | |||
| 21 | #include <stdio.h> | |||
| 22 | #include <stdlib.h> | |||
| 23 | #include <string.h> | |||
| 24 | #include <unistd.h> | |||
| 25 | ||||
| 26 | #include "../common/common.h" | |||
| 27 | #include "../vi/vi.h" | |||
| 28 | ||||
| 29 | #define MAXIMUM(a, b)(((a) > (b)) ? (a) : (b)) (((a) > (b)) ? (a) : (b)) | |||
| 30 | ||||
| 31 | #define SUB_FIRST0x01 0x01 /* The 'r' flag isn't reasonable. */ | |||
| 32 | #define SUB_MUSTSETR0x02 0x02 /* The 'r' flag is required. */ | |||
| 33 | ||||
| 34 | static int re_conv(SCR *, char **, size_t *, int *); | |||
| 35 | static int re_sub(SCR *, char *, char **, size_t *, size_t *, regmatch_t [10]); | |||
| 36 | static int re_tag_conv(SCR *, char **, size_t *, int *); | |||
| 37 | static int s(SCR *, EXCMD *, char *, regex_t *, u_int); | |||
| 38 | ||||
| 39 | /* | |||
| 40 | * ex_s -- | |||
| 41 | * [line [,line]] s[ubstitute] [[/;]pat[/;]/repl[/;] [cgr] [count] [#lp]] | |||
| 42 | * | |||
| 43 | * Substitute on lines matching a pattern. | |||
| 44 | * | |||
| 45 | * PUBLIC: int ex_s(SCR *, EXCMD *); | |||
| 46 | */ | |||
| 47 | int | |||
| 48 | ex_s(SCR *sp, EXCMD *cmdp) | |||
| 49 | { | |||
| 50 | regex_t *re; | |||
| 51 | size_t blen, len; | |||
| 52 | u_int flags; | |||
| 53 | int delim; | |||
| 54 | char *bp, *ptrn, *rep, *p, *t; | |||
| 55 | ||||
| 56 | /* | |||
| 57 | * Skip leading white space. | |||
| 58 | * | |||
| 59 | * !!! | |||
| 60 | * Historic vi allowed any non-alphanumeric to serve as the | |||
| 61 | * substitution command delimiter. | |||
| 62 | * | |||
| 63 | * !!! | |||
| 64 | * If the arguments are empty, it's the same as &, i.e. we | |||
| 65 | * repeat the last substitution. | |||
| 66 | */ | |||
| 67 | if (cmdp->argc == 0) | |||
| 68 | goto subagain; | |||
| 69 | for (p = cmdp->argv[0]->bp, | |||
| 70 | len = cmdp->argv[0]->len; len > 0; --len, ++p) { | |||
| 71 | if (!isblank(*p)) | |||
| 72 | break; | |||
| 73 | } | |||
| 74 | if (len == 0) | |||
| 75 | subagain: return (ex_subagain(sp, cmdp)); | |||
| 76 | ||||
| 77 | delim = *p++; | |||
| 78 | if (isalnum(delim) || delim == '\\') | |||
| 79 | return (s(sp, cmdp, p, &sp->subre_c, SUB_MUSTSETR0x02)); | |||
| 80 | ||||
| 81 | /* | |||
| 82 | * !!! | |||
| 83 | * The full-blown substitute command reset the remembered | |||
| 84 | * state of the 'c' and 'g' suffices. | |||
| 85 | */ | |||
| 86 | sp->c_suffix = sp->g_suffix = 0; | |||
| 87 | ||||
| 88 | /* | |||
| 89 | * Get the pattern string, toss escaping characters. | |||
| 90 | * | |||
| 91 | * !!! | |||
| 92 | * Historic vi accepted any of the following forms: | |||
| 93 | * | |||
| 94 | * :s/abc/def/ change "abc" to "def" | |||
| 95 | * :s/abc/def change "abc" to "def" | |||
| 96 | * :s/abc/ delete "abc" | |||
| 97 | * :s/abc delete "abc" | |||
| 98 | * | |||
| 99 | * QUOTING NOTE: | |||
| 100 | * | |||
| 101 | * Only toss an escaping character if it escapes a delimiter. | |||
| 102 | * This means that "s/A/\\\\f" replaces "A" with "\\f". It | |||
| 103 | * would be nice to be more regular, i.e. for each layer of | |||
| 104 | * escaping a single escaping character is removed, but that's | |||
| 105 | * not how the historic vi worked. | |||
| 106 | */ | |||
| 107 | for (ptrn = t = p;;) { | |||
| 108 | if (p[0] == '\0' || p[0] == delim) { | |||
| 109 | if (p[0] == delim) | |||
| 110 | ++p; | |||
| 111 | /* | |||
| 112 | * !!! | |||
| 113 | * Nul terminate the pattern string -- it's passed | |||
| 114 | * to regcomp which doesn't understand anything else. | |||
| 115 | */ | |||
| 116 | *t = '\0'; | |||
| 117 | break; | |||
| 118 | } | |||
| 119 | if (p[0] == '\\') { | |||
| 120 | if (p[1] == delim) | |||
| 121 | ++p; | |||
| 122 | else if (p[1] == '\\') | |||
| 123 | *t++ = *p++; | |||
| 124 | } | |||
| 125 | *t++ = *p++; | |||
| 126 | } | |||
| 127 | ||||
| 128 | /* | |||
| 129 | * If the pattern string is empty, use the last RE (not just the | |||
| 130 | * last substitution RE). | |||
| 131 | */ | |||
| 132 | if (*ptrn == '\0') { | |||
| 133 | if (sp->re == NULL((void *)0)) { | |||
| 134 | ex_emsg(sp, NULL((void *)0), EXM_NOPREVRE); | |||
| 135 | return (1); | |||
| 136 | } | |||
| 137 | ||||
| 138 | /* Re-compile the RE if necessary. */ | |||
| 139 | if (!F_ISSET(sp, SC_RE_SEARCH)(((sp)->flags) & ((0x00400000))) && re_compile(sp, | |||
| 140 | sp->re, sp->re_len, NULL((void *)0), NULL((void *)0), &sp->re_c, RE_C_SEARCH0x0002)) | |||
| 141 | return (1); | |||
| 142 | flags = 0; | |||
| 143 | } else { | |||
| 144 | /* | |||
| 145 | * !!! | |||
| 146 | * Compile the RE. Historic practice is that substitutes set | |||
| 147 | * the search direction as well as both substitute and search | |||
| 148 | * RE's. We compile the RE twice, as we don't want to bother | |||
| 149 | * ref counting the pattern string and (opaque) structure. | |||
| 150 | */ | |||
| 151 | if (re_compile(sp, ptrn, t - ptrn, | |||
| 152 | &sp->re, &sp->re_len, &sp->re_c, RE_C_SEARCH0x0002)) | |||
| 153 | return (1); | |||
| 154 | if (re_compile(sp, ptrn, t - ptrn, | |||
| 155 | &sp->subre, &sp->subre_len, &sp->subre_c, RE_C_SUBST0x0008)) | |||
| 156 | return (1); | |||
| 157 | ||||
| 158 | flags = SUB_FIRST0x01; | |||
| 159 | sp->searchdir = FORWARD; | |||
| 160 | } | |||
| 161 | re = &sp->re_c; | |||
| 162 | ||||
| 163 | /* | |||
| 164 | * Get the replacement string. | |||
| 165 | * | |||
| 166 | * The special character & (\& if O_MAGIC not set) matches the | |||
| 167 | * entire RE. No handling of & is required here, it's done by | |||
| 168 | * re_sub(). | |||
| 169 | * | |||
| 170 | * The special character ~ (\~ if O_MAGIC not set) inserts the | |||
| 171 | * previous replacement string into this replacement string. | |||
| 172 | * Count ~'s to figure out how much space we need. We could | |||
| 173 | * special case nonexistent last patterns or whether or not | |||
| 174 | * O_MAGIC is set, but it's probably not worth the effort. | |||
| 175 | * | |||
| 176 | * QUOTING NOTE: | |||
| 177 | * | |||
| 178 | * Only toss an escaping character if it escapes a delimiter or | |||
| 179 | * if O_MAGIC is set and it escapes a tilde. | |||
| 180 | * | |||
| 181 | * !!! | |||
| 182 | * If the entire replacement pattern is "%", then use the last | |||
| 183 | * replacement pattern. This semantic was added to vi in System | |||
| 184 | * V and then percolated elsewhere, presumably around the time | |||
| 185 | * that it was added to their version of ed(1). | |||
| 186 | */ | |||
| 187 | if (p[0] == '\0' || p[0] == delim) { | |||
| 188 | if (p[0] == delim) | |||
| 189 | ++p; | |||
| 190 | free(sp->repl); | |||
| 191 | sp->repl = NULL((void *)0); | |||
| 192 | sp->repl_len = 0; | |||
| 193 | } else if (p[0] == '%' && (p[1] == '\0' || p[1] == delim)) | |||
| 194 | p += p[1] == delim ? 2 : 1; | |||
| 195 | else { | |||
| 196 | for (rep = p, len = 0; | |||
| 197 | p[0] != '\0' && p[0] != delim; ++p, ++len) | |||
| 198 | if (p[0] == '~') | |||
| 199 | len += sp->repl_len; | |||
| 200 | GET_SPACE_RET(sp, bp, blen, len){ GS *L__gp = (sp) == ((void *)0) ? ((void *)0) : (sp)->gp ; if (L__gp == ((void *)0) || (((L__gp)->flags) & ((0x0100 )))) { (bp) = ((void *)0); (blen) = 0; { void *L__bincp; if ( ((len)) > ((blen))) { if ((L__bincp = binc(((sp)), ((bp)), &((blen)), ((len)))) == ((void *)0)) return (1); ((bp)) = L__bincp; } }; } else { { void *L__bincp; if (((len)) > ( L__gp->tmp_blen)) { if ((L__bincp = binc(((sp)), (L__gp-> tmp_bp), &(L__gp->tmp_blen), ((len)))) == ((void *)0)) return (1); (L__gp->tmp_bp) = L__bincp; } }; (bp) = L__gp ->tmp_bp; (blen) = L__gp->tmp_blen; (((L__gp)->flags ) |= ((0x0100))); } }; | |||
| 201 | for (t = bp, len = 0, p = rep;;) { | |||
| 202 | if (p[0] == '\0' || p[0] == delim) { | |||
| 203 | if (p[0] == delim) | |||
| 204 | ++p; | |||
| 205 | break; | |||
| 206 | } | |||
| 207 | if (p[0] == '\\') { | |||
| 208 | if (p[1] == delim) | |||
| 209 | ++p; | |||
| 210 | else if (p[1] == '\\') { | |||
| 211 | *t++ = *p++; | |||
| 212 | ++len; | |||
| 213 | } else if (p[1] == '~') { | |||
| 214 | ++p; | |||
| 215 | if (!O_ISSET(sp, O_MAGIC)((((&(((sp)))->opts[(((O_MAGIC)))])->flags) & ( (0x01))) ? (((sp)))->gp->opts[(((sp)))->opts[(((O_MAGIC )))].o_cur.val].o_cur.val : (((sp)))->opts[(((O_MAGIC)))]. o_cur.val)) | |||
| 216 | goto tilde; | |||
| 217 | } | |||
| 218 | } else if (p[0] == '~' && O_ISSET(sp, O_MAGIC)((((&(((sp)))->opts[(((O_MAGIC)))])->flags) & ( (0x01))) ? (((sp)))->gp->opts[(((sp)))->opts[(((O_MAGIC )))].o_cur.val].o_cur.val : (((sp)))->opts[(((O_MAGIC)))]. o_cur.val)) { | |||
| 219 | tilde: ++p; | |||
| 220 | memcpy(t, sp->repl, sp->repl_len); | |||
| 221 | t += sp->repl_len; | |||
| 222 | len += sp->repl_len; | |||
| 223 | continue; | |||
| 224 | } | |||
| 225 | *t++ = *p++; | |||
| 226 | ++len; | |||
| 227 | } | |||
| 228 | if ((sp->repl_len = len) != 0) { | |||
| 229 | free(sp->repl); | |||
| 230 | if ((sp->repl = malloc(len)) == NULL((void *)0)) { | |||
| 231 | msgq(sp, M_SYSERR, NULL((void *)0)); | |||
| 232 | FREE_SPACE(sp, bp, blen){ GS *L__gp = (sp) == ((void *)0) ? ((void *)0) : (sp)->gp ; if (L__gp != ((void *)0) && (bp) == L__gp->tmp_bp ) (((L__gp)->flags) &= ~((0x0100))); else free(bp); }; | |||
| 233 | return (1); | |||
| 234 | } | |||
| 235 | memcpy(sp->repl, bp, len); | |||
| 236 | } | |||
| 237 | FREE_SPACE(sp, bp, blen){ GS *L__gp = (sp) == ((void *)0) ? ((void *)0) : (sp)->gp ; if (L__gp != ((void *)0) && (bp) == L__gp->tmp_bp ) (((L__gp)->flags) &= ~((0x0100))); else free(bp); }; | |||
| 238 | } | |||
| 239 | return (s(sp, cmdp, p, re, flags)); | |||
| 240 | } | |||
| 241 | ||||
| 242 | /* | |||
| 243 | * ex_subagain -- | |||
| 244 | * [line [,line]] & [cgr] [count] [#lp]] | |||
| 245 | * | |||
| 246 | * Substitute using the last substitute RE and replacement pattern. | |||
| 247 | * | |||
| 248 | * PUBLIC: int ex_subagain(SCR *, EXCMD *); | |||
| 249 | */ | |||
| 250 | int | |||
| 251 | ex_subagain(SCR *sp, EXCMD *cmdp) | |||
| 252 | { | |||
| 253 | if (sp->subre == NULL((void *)0)) { | |||
| 254 | ex_emsg(sp, NULL((void *)0), EXM_NOPREVRE); | |||
| 255 | return (1); | |||
| 256 | } | |||
| 257 | if (!F_ISSET(sp, SC_RE_SUBST)(((sp)->flags) & ((0x00800000))) && re_compile(sp, | |||
| 258 | sp->subre, sp->subre_len, NULL((void *)0), NULL((void *)0), &sp->subre_c, RE_C_SUBST0x0008)) | |||
| 259 | return (1); | |||
| 260 | return (s(sp, | |||
| 261 | cmdp, cmdp->argc ? cmdp->argv[0]->bp : NULL((void *)0), &sp->subre_c, 0)); | |||
| 262 | } | |||
| 263 | ||||
| 264 | /* | |||
| 265 | * ex_subtilde -- | |||
| 266 | * [line [,line]] ~ [cgr] [count] [#lp]] | |||
| 267 | * | |||
| 268 | * Substitute using the last RE and last substitute replacement pattern. | |||
| 269 | * | |||
| 270 | * PUBLIC: int ex_subtilde(SCR *, EXCMD *); | |||
| 271 | */ | |||
| 272 | int | |||
| 273 | ex_subtilde(SCR *sp, EXCMD *cmdp) | |||
| 274 | { | |||
| 275 | if (sp->re == NULL((void *)0)) { | |||
| 276 | ex_emsg(sp, NULL((void *)0), EXM_NOPREVRE); | |||
| 277 | return (1); | |||
| 278 | } | |||
| 279 | if (!F_ISSET(sp, SC_RE_SEARCH)(((sp)->flags) & ((0x00400000))) && re_compile(sp, | |||
| 280 | sp->re, sp->re_len, NULL((void *)0), NULL((void *)0), &sp->re_c, RE_C_SEARCH0x0002)) | |||
| 281 | return (1); | |||
| 282 | return (s(sp, | |||
| 283 | cmdp, cmdp->argc ? cmdp->argv[0]->bp : NULL((void *)0), &sp->re_c, 0)); | |||
| 284 | } | |||
| 285 | ||||
| 286 | /* | |||
| 287 | * s -- | |||
| 288 | * Do the substitution. This stuff is *really* tricky. There are lots of | |||
| 289 | * special cases, and general nastiness. Don't mess with it unless you're | |||
| 290 | * pretty confident. | |||
| 291 | * | |||
| 292 | * The nasty part of the substitution is what happens when the replacement | |||
| 293 | * string contains newlines. It's a bit tricky -- consider the information | |||
| 294 | * that has to be retained for "s/f\(o\)o/^M\1^M\1/". The solution here is | |||
| 295 | * to build a set of newline offsets which we use to break the line up later, | |||
| 296 | * when the replacement is done. Don't change it unless you're *damned* | |||
| 297 | * confident. | |||
| 298 | */ | |||
| 299 | #define NEEDNEWLINE(sp){ if ((sp)->newl_len == (sp)->newl_cnt) { (sp)->newl_len += 25; { void *tmpp; if (((tmpp) = (reallocarray(((sp)->newl ), ((sp)->newl_len), (sizeof(size_t))))) == ((void *)0)) { msgq(((sp)), M_SYSERR, ((void *)0)); free((sp)->newl); } ( sp)->newl = tmpp; }; if ((sp)->newl == ((void *)0)) { ( sp)->newl_len = 0; return (1); } } } { \ | |||
| 300 | if ((sp)->newl_len == (sp)->newl_cnt) { \ | |||
| 301 | (sp)->newl_len += 25; \ | |||
| 302 | REALLOCARRAY((sp), (sp)->newl, \{ void *tmpp; if (((tmpp) = (reallocarray(((sp)->newl), (( sp)->newl_len), (sizeof(size_t))))) == ((void *)0)) { msgq (((sp)), M_SYSERR, ((void *)0)); free((sp)->newl); } (sp)-> newl = tmpp; } | |||
| 303 | (sp)->newl_len, sizeof(size_t)){ void *tmpp; if (((tmpp) = (reallocarray(((sp)->newl), (( sp)->newl_len), (sizeof(size_t))))) == ((void *)0)) { msgq (((sp)), M_SYSERR, ((void *)0)); free((sp)->newl); } (sp)-> newl = tmpp; }; \ | |||
| 304 | if ((sp)->newl == NULL((void *)0)) { \ | |||
| 305 | (sp)->newl_len = 0; \ | |||
| 306 | return (1); \ | |||
| 307 | } \ | |||
| 308 | } \ | |||
| 309 | } | |||
| 310 | ||||
| 311 | #define BUILD(sp, l, len){ if (lbclen + (len) > lblen) { lblen += (((lbclen + (len) ) > (256)) ? (lbclen + (len)) : (256)); { void *tmpp; if ( ((tmpp) = (realloc((lb), (lblen)))) == ((void *)0)) { msgq((( sp)), M_SYSERR, ((void *)0)); free(lb); } lb = tmpp; }; if (lb == ((void *)0)) { lbclen = 0; return (1); } } memcpy(lb + lbclen , (l), (len)); lbclen += (len); } { \ | |||
| 312 | if (lbclen + (len) > lblen) { \ | |||
| 313 | lblen += MAXIMUM(lbclen + (len), 256)(((lbclen + (len)) > (256)) ? (lbclen + (len)) : (256)); \ | |||
| 314 | REALLOC((sp), lb, lblen){ void *tmpp; if (((tmpp) = (realloc((lb), (lblen)))) == ((void *)0)) { msgq(((sp)), M_SYSERR, ((void *)0)); free(lb); } lb = tmpp; }; \ | |||
| 315 | if (lb == NULL((void *)0)) { \ | |||
| 316 | lbclen = 0; \ | |||
| 317 | return (1); \ | |||
| 318 | } \ | |||
| 319 | } \ | |||
| 320 | memcpy(lb + lbclen, (l), (len)); \ | |||
| 321 | lbclen += (len); \ | |||
| 322 | } | |||
| 323 | ||||
| 324 | #define NEEDSP(sp, len, pnt){ if (lbclen + (len) > lblen) { lblen += (((lbclen + (len) ) > (256)) ? (lbclen + (len)) : (256)); { void *tmpp; if ( ((tmpp) = (realloc((lb), (lblen)))) == ((void *)0)) { msgq((( sp)), M_SYSERR, ((void *)0)); free(lb); } lb = tmpp; }; if (lb == ((void *)0)) { lbclen = 0; return (1); } (pnt) = lb + lbclen ; } } { \ | |||
| 325 | if (lbclen + (len) > lblen) { \ | |||
| 326 | lblen += MAXIMUM(lbclen + (len), 256)(((lbclen + (len)) > (256)) ? (lbclen + (len)) : (256)); \ | |||
| 327 | REALLOC((sp), lb, lblen){ void *tmpp; if (((tmpp) = (realloc((lb), (lblen)))) == ((void *)0)) { msgq(((sp)), M_SYSERR, ((void *)0)); free(lb); } lb = tmpp; }; \ | |||
| 328 | if (lb == NULL((void *)0)) { \ | |||
| 329 | lbclen = 0; \ | |||
| 330 | return (1); \ | |||
| 331 | } \ | |||
| 332 | (pnt) = lb + lbclen; \ | |||
| 333 | } \ | |||
| 334 | } | |||
| 335 | ||||
| 336 | static int | |||
| 337 | s(SCR *sp, EXCMD *cmdp, char *s, regex_t *re, u_int flags) | |||
| 338 | { | |||
| 339 | EVENT ev; | |||
| 340 | MARK from, to; | |||
| 341 | TEXTH tiq; | |||
| 342 | recno_t elno, lno, slno; | |||
| 343 | regmatch_t match[10]; | |||
| 344 | size_t blen, cnt, last, lbclen, lblen, len, llen; | |||
| 345 | size_t offset, saved_offset, scno; | |||
| 346 | int lflag, nflag, pflag, rflag; | |||
| 347 | int didsub, do_eol_match, eflags, nempty, eval; | |||
| 348 | int linechanged, matched, quit, rval; | |||
| 349 | unsigned long ul; | |||
| 350 | char *bp, *lb; | |||
| 351 | ||||
| 352 | NEEDFILE(sp, cmdp){ if ((sp)->ep == ((void *)0)) { ex_emsg((sp), (cmdp)-> cmd->name, EXM_NOFILEYET); return (1); } }; | |||
| 353 | ||||
| 354 | slno = sp->lno; | |||
| 355 | scno = sp->cno; | |||
| 356 | ||||
| 357 | /* | |||
| 358 | * !!! | |||
| 359 | * Historically, the 'g' and 'c' suffices were always toggled as flags, | |||
| 360 | * so ":s/A/B/" was the same as ":s/A/B/ccgg". If O_EDCOMPATIBLE was | |||
| 361 | * not set, they were initialized to 0 for all substitute commands. If | |||
| 362 | * O_EDCOMPATIBLE was set, they were initialized to 0 only if the user | |||
| 363 | * specified substitute/replacement patterns (see ex_s()). | |||
| 364 | */ | |||
| 365 | if (!O_ISSET(sp, O_EDCOMPATIBLE)((((&(((sp)))->opts[(((O_EDCOMPATIBLE)))])->flags) & ((0x01))) ? (((sp)))->gp->opts[(((sp)))->opts[(((O_EDCOMPATIBLE )))].o_cur.val].o_cur.val : (((sp)))->opts[(((O_EDCOMPATIBLE )))].o_cur.val)) | |||
| 366 | sp->c_suffix = sp->g_suffix = 0; | |||
| 367 | ||||
| 368 | /* | |||
| 369 | * Historic vi permitted the '#', 'l' and 'p' options in vi mode, but | |||
| 370 | * it only displayed the last change. I'd disallow them, but they are | |||
| 371 | * useful in combination with the [v]global commands. In the current | |||
| 372 | * model the problem is combining them with the 'c' flag -- the screen | |||
| 373 | * would have to flip back and forth between the confirm screen and the | |||
| 374 | * ex print screen, which would be pretty awful. We do display all | |||
| 375 | * changes, though, for what that's worth. | |||
| 376 | * | |||
| 377 | * !!! | |||
| 378 | * Historic vi was fairly strict about the order of "options", the | |||
| 379 | * count, and "flags". I'm somewhat fuzzy on the difference between | |||
| 380 | * options and flags, anyway, so this is a simpler approach, and we | |||
| 381 | * just take it them in whatever order the user gives them. (The ex | |||
| 382 | * usage statement doesn't reflect this.) | |||
| 383 | */ | |||
| 384 | lflag = nflag = pflag = rflag = 0; | |||
| 385 | if (s == NULL((void *)0)) | |||
| 386 | goto noargs; | |||
| 387 | for (lno = OOBLNO0; *s != '\0'; ++s) | |||
| 388 | switch (*s) { | |||
| 389 | case ' ': | |||
| 390 | case '\t': | |||
| 391 | continue; | |||
| 392 | case '+': | |||
| 393 | ++cmdp->flagoff; | |||
| 394 | break; | |||
| 395 | case '-': | |||
| 396 | --cmdp->flagoff; | |||
| 397 | break; | |||
| 398 | case '0': case '1': case '2': case '3': case '4': | |||
| 399 | case '5': case '6': case '7': case '8': case '9': | |||
| 400 | if (lno != OOBLNO0) | |||
| 401 | goto usage; | |||
| 402 | errno(*__errno()) = 0; | |||
| 403 | if ((ul = strtoul(s, &s, 10)) >= UINT_MAX0xffffffffU) | |||
| 404 | errno(*__errno()) = ERANGE34; | |||
| 405 | if (*s == '\0') /* Loop increment correction. */ | |||
| 406 | --s; | |||
| 407 | if (errno(*__errno()) == ERANGE34) { | |||
| 408 | if (ul >= UINT_MAX0xffffffffU) | |||
| 409 | msgq(sp, M_ERR, "Count overflow"); | |||
| 410 | else | |||
| 411 | msgq(sp, M_SYSERR, NULL((void *)0)); | |||
| 412 | return (1); | |||
| 413 | } | |||
| 414 | lno = (recno_t)ul; | |||
| 415 | /* | |||
| 416 | * In historic vi, the count was inclusive from the | |||
| 417 | * second address. | |||
| 418 | */ | |||
| 419 | cmdp->addr1.lno = cmdp->addr2.lno; | |||
| 420 | cmdp->addr2.lno += lno - 1; | |||
| 421 | if (!db_exist(sp, cmdp->addr2.lno) && | |||
| 422 | db_last(sp, &cmdp->addr2.lno)) | |||
| 423 | return (1); | |||
| 424 | break; | |||
| 425 | case '#': | |||
| 426 | nflag = 1; | |||
| 427 | break; | |||
| 428 | case 'c': | |||
| 429 | sp->c_suffix = !sp->c_suffix; | |||
| 430 | ||||
| 431 | /* Ex text structure initialization. */ | |||
| 432 | if (F_ISSET(sp, SC_EX)(((sp)->flags) & ((0x00000001)))) { | |||
| 433 | memset(&tiq, 0, sizeof(TEXTH)); | |||
| 434 | TAILQ_INIT(&tiq)do { (&tiq)->tqh_first = ((void *)0); (&tiq)->tqh_last = &(&tiq)->tqh_first; } while (0); | |||
| 435 | } | |||
| 436 | break; | |||
| 437 | case 'g': | |||
| 438 | sp->g_suffix = !sp->g_suffix; | |||
| 439 | break; | |||
| 440 | case 'l': | |||
| 441 | lflag = 1; | |||
| 442 | break; | |||
| 443 | case 'p': | |||
| 444 | pflag = 1; | |||
| 445 | break; | |||
| 446 | case 'r': | |||
| 447 | if (LF_ISSET(SUB_FIRST)((flags) & ((0x01)))) { | |||
| 448 | msgq(sp, M_ERR, | |||
| 449 | "Regular expression specified; r flag meaningless"); | |||
| 450 | return (1); | |||
| 451 | } | |||
| 452 | if (!F_ISSET(sp, SC_RE_SEARCH)(((sp)->flags) & ((0x00400000)))) { | |||
| 453 | ex_emsg(sp, NULL((void *)0), EXM_NOPREVRE); | |||
| 454 | return (1); | |||
| 455 | } | |||
| 456 | rflag = 1; | |||
| 457 | re = &sp->re_c; | |||
| 458 | break; | |||
| 459 | default: | |||
| 460 | goto usage; | |||
| 461 | } | |||
| 462 | ||||
| 463 | if (*s != '\0' || (!rflag && LF_ISSET(SUB_MUSTSETR)((flags) & ((0x02))))) { | |||
| 464 | usage: ex_emsg(sp, cmdp->cmd->usage, EXM_USAGE); | |||
| 465 | return (1); | |||
| 466 | } | |||
| 467 | ||||
| 468 | noargs: if (F_ISSET(sp, SC_VI)(((sp)->flags) & ((0x00000002))) && sp->c_suffix && (lflag || nflag || pflag)) { | |||
| 469 | msgq(sp, M_ERR, | |||
| 470 | "The #, l and p flags may not be combined with the c flag in vi mode"); | |||
| 471 | return (1); | |||
| 472 | } | |||
| 473 | ||||
| 474 | /* | |||
| 475 | * bp: if interactive, line cache | |||
| 476 | * blen: if interactive, line cache length | |||
| 477 | * lb: build buffer pointer. | |||
| 478 | * lbclen: current length of built buffer. | |||
| 479 | * lblen; length of build buffer. | |||
| 480 | */ | |||
| 481 | bp = lb = NULL((void *)0); | |||
| 482 | blen = lbclen = lblen = 0; | |||
| 483 | ||||
| 484 | /* For each line... */ | |||
| 485 | for (matched = quit = 0, lno = cmdp->addr1.lno, | |||
| 486 | elno = cmdp->addr2.lno; !quit && lno <= elno; ++lno) { | |||
| 487 | ||||
| 488 | /* Someone's unhappy, time to stop. */ | |||
| 489 | if (INTERRUPTED(sp)(((((sp)->gp)->flags) & ((0x0004))) || (!v_event_get ((sp), ((void *)0), 0, 0x001) && ((((sp)->gp)-> flags) & ((0x0004)))))) | |||
| 490 | break; | |||
| 491 | ||||
| 492 | /* Get the line. */ | |||
| 493 | if (db_get(sp, lno, DBG_FATAL0x001, &s, &llen)) | |||
| 494 | goto err; | |||
| 495 | ||||
| 496 | /* | |||
| 497 | * Make a local copy if doing confirmation -- when calling | |||
| 498 | * the confirm routine we're likely to lose the cached copy. | |||
| 499 | */ | |||
| 500 | if (sp->c_suffix) { | |||
| 501 | if (bp == NULL((void *)0)) { | |||
| 502 | GET_SPACE_RET(sp, bp, blen, llen){ GS *L__gp = (sp) == ((void *)0) ? ((void *)0) : (sp)->gp ; if (L__gp == ((void *)0) || (((L__gp)->flags) & ((0x0100 )))) { (bp) = ((void *)0); (blen) = 0; { void *L__bincp; if ( ((llen)) > ((blen))) { if ((L__bincp = binc(((sp)), ((bp)) , &((blen)), ((llen)))) == ((void *)0)) return (1); ((bp) ) = L__bincp; } }; } else { { void *L__bincp; if (((llen)) > (L__gp->tmp_blen)) { if ((L__bincp = binc(((sp)), (L__gp-> tmp_bp), &(L__gp->tmp_blen), ((llen)))) == ((void *)0) ) return (1); (L__gp->tmp_bp) = L__bincp; } }; (bp) = L__gp ->tmp_bp; (blen) = L__gp->tmp_blen; (((L__gp)->flags ) |= ((0x0100))); } }; | |||
| 503 | } else | |||
| 504 | ADD_SPACE_RET(sp, bp, blen, llen){ GS *L__gp = (sp) == ((void *)0) ? ((void *)0) : (sp)->gp ; if (L__gp != ((void *)0) && (bp) == L__gp->tmp_bp ) { (((L__gp)->flags) &= ~((0x0100))); { void *L__bincp ; if (((llen)) > (L__gp->tmp_blen)) { if ((L__bincp = binc (((sp)), (L__gp->tmp_bp), &(L__gp->tmp_blen), ((llen )))) == ((void *)0)) return (1); (L__gp->tmp_bp) = L__bincp ; } }; (bp) = L__gp->tmp_bp; (blen) = L__gp->tmp_blen; ( ((L__gp)->flags) |= ((0x0100))); } else { void *L__bincp; if (((llen)) > ((blen))) { if ((L__bincp = binc(((sp)), ((bp )), &((blen)), ((llen)))) == ((void *)0)) return (1); ((bp )) = L__bincp; } }; }; | |||
| 505 | memcpy(bp, s, llen); | |||
| 506 | s = bp; | |||
| 507 | } | |||
| 508 | ||||
| 509 | /* Start searching from the beginning. */ | |||
| 510 | offset = 0; | |||
| 511 | len = llen; | |||
| 512 | ||||
| 513 | /* Reset the build buffer offset. */ | |||
| 514 | lbclen = 0; | |||
| 515 | ||||
| 516 | /* Reset empty match test variable. */ | |||
| 517 | nempty = -1; | |||
| 518 | ||||
| 519 | /* | |||
| 520 | * We don't want to have to do a setline if the line didn't | |||
| 521 | * change -- keep track of whether or not this line changed. | |||
| 522 | * If doing confirmations, don't want to keep setting the | |||
| 523 | * line if change is refused -- keep track of substitutions. | |||
| 524 | */ | |||
| 525 | didsub = linechanged = 0; | |||
| 526 | ||||
| 527 | /* New line, do an EOL match. */ | |||
| 528 | do_eol_match = 1; | |||
| 529 | ||||
| 530 | /* It's not nul terminated, but we pretend it is. */ | |||
| 531 | eflags = REG_STARTEND00004; | |||
| 532 | ||||
| 533 | /* The search area is from s + offset to the EOL. */ | |||
| 534 | nextmatch: match[0].rm_so = offset; | |||
| 535 | match[0].rm_eo = llen; | |||
| 536 | ||||
| 537 | /* Get the next match. */ | |||
| 538 | eval = regexec(re, (char *)s, 10, match, eflags); | |||
| 539 | ||||
| 540 | /* | |||
| 541 | * There wasn't a match or if there was an error, deal with | |||
| 542 | * it. If there was a previous match in this line, resolve | |||
| 543 | * the changes into the database. Otherwise, just move on. | |||
| 544 | */ | |||
| 545 | if (eval == REG_NOMATCH1) | |||
| 546 | goto endmatch; | |||
| 547 | if (eval != 0) { | |||
| 548 | re_error(sp, eval, re); | |||
| 549 | goto err; | |||
| 550 | } | |||
| 551 | matched = 1; | |||
| 552 | ||||
| 553 | /* Only the first search can match an anchored expression. */ | |||
| 554 | eflags |= REG_NOTBOL00001; | |||
| 555 | ||||
| 556 | /* | |||
| 557 | * !!! | |||
| 558 | * It's possible to match 0-length strings -- for example, the | |||
| 559 | * command s;a*;X;, when matched against the string "aabb" will | |||
| 560 | * result in "XbXbX", i.e. the matches are "aa", the space | |||
| 561 | * between the b's and the space between the b's and the end of | |||
| 562 | * the string. There is a similar space between the beginning | |||
| 563 | * of the string and the a's. The rule that we use (because vi | |||
| 564 | * historically used it) is that any 0-length match, occurring | |||
| 565 | * immediately after a match, is ignored. Otherwise, the above | |||
| 566 | * example would have resulted in "XXbXbX". Another example is | |||
| 567 | * incorrectly using " *" to replace groups of spaces with one | |||
| 568 | * space. | |||
| 569 | * | |||
| 570 | * If the match is empty and at the same place as the end of the | |||
| 571 | * previous match, ignore the match and move forward. If | |||
| 572 | * there's no more characters in the string, we were | |||
| 573 | * attempting to match after the last character, so quit. | |||
| 574 | */ | |||
| 575 | if (match[0].rm_so == nempty && match[0].rm_eo == nempty) { | |||
| 576 | nempty = -1; | |||
| 577 | if (len == 0) | |||
| 578 | goto endmatch; | |||
| 579 | BUILD(sp, s + offset, 1){ if (lbclen + (1) > lblen) { lblen += (((lbclen + (1)) > (256)) ? (lbclen + (1)) : (256)); { void *tmpp; if (((tmpp) = (realloc((lb), (lblen)))) == ((void *)0)) { msgq(((sp)), M_SYSERR , ((void *)0)); free(lb); } lb = tmpp; }; if (lb == ((void *) 0)) { lbclen = 0; return (1); } } memcpy(lb + lbclen, (s + offset ), (1)); lbclen += (1); } | |||
| 580 | ++offset; | |||
| 581 | --len; | |||
| 582 | goto nextmatch; | |||
| 583 | } | |||
| 584 | ||||
| 585 | /* Confirm change. */ | |||
| 586 | if (sp->c_suffix) { | |||
| 587 | /* | |||
| 588 | * Set the cursor position for confirmation. Note, | |||
| 589 | * if we matched on a '$', the cursor may be past | |||
| 590 | * the end of line. | |||
| 591 | */ | |||
| 592 | from.lno = to.lno = lno; | |||
| 593 | from.cno = match[0].rm_so; | |||
| 594 | to.cno = match[0].rm_eo; | |||
| 595 | /* | |||
| 596 | * Both ex and vi have to correct for a change before | |||
| 597 | * the first character in the line. | |||
| 598 | */ | |||
| 599 | if (llen == 0) | |||
| 600 | from.cno = to.cno = 0; | |||
| 601 | if (F_ISSET(sp, SC_VI)(((sp)->flags) & ((0x00000002)))) { | |||
| 602 | /* | |||
| 603 | * Only vi has to correct for a change after | |||
| 604 | * the last character in the line. | |||
| 605 | * | |||
| 606 | * XXX | |||
| 607 | * It would be nice to change the vi code so | |||
| 608 | * that we could display a cursor past EOL. | |||
| 609 | */ | |||
| 610 | if (to.cno >= llen) | |||
| 611 | to.cno = llen - 1; | |||
| 612 | if (from.cno >= llen) | |||
| 613 | from.cno = llen - 1; | |||
| 614 | ||||
| 615 | sp->lno = from.lno; | |||
| 616 | sp->cno = from.cno; | |||
| 617 | if (vs_refresh(sp, 1)) | |||
| 618 | goto err; | |||
| 619 | ||||
| 620 | vs_update(sp, "Confirm change? [n]", NULL((void *)0)); | |||
| 621 | ||||
| 622 | if (v_event_get(sp, &ev, 0, 0)) | |||
| 623 | goto err; | |||
| 624 | switch (ev.e_event) { | |||
| 625 | case E_CHARACTER: | |||
| 626 | break; | |||
| 627 | case E_EOF: | |||
| 628 | case E_ERR: | |||
| 629 | case E_INTERRUPT: | |||
| 630 | goto lquit; | |||
| 631 | default: | |||
| 632 | v_event_err(sp, &ev); | |||
| 633 | goto lquit; | |||
| 634 | } | |||
| 635 | } else { | |||
| 636 | const int flags = | |||
| 637 | O_ISSET(sp, O_NUMBER)((((&(((sp)))->opts[(((O_NUMBER)))])->flags) & ( (0x01))) ? (((sp)))->gp->opts[(((sp)))->opts[(((O_NUMBER )))].o_cur.val].o_cur.val : (((sp)))->opts[(((O_NUMBER)))] .o_cur.val) ? E_C_HASH0x00200 : 0; | |||
| 638 | if (ex_print(sp, cmdp, &from, &to, flags) || | |||
| 639 | ex_scprint(sp, &from, &to)) | |||
| 640 | goto lquit; | |||
| 641 | if (ex_txt(sp, &tiq, 0, TXT_CR0x00000800)) | |||
| 642 | goto err; | |||
| 643 | ev.e_c_u_event._e_ch.c = TAILQ_FIRST(&tiq)((&tiq)->tqh_first)->lb[0]; | |||
| 644 | } | |||
| 645 | ||||
| 646 | switch (ev.e_c_u_event._e_ch.c) { | |||
| 647 | case CH_YES'y': | |||
| 648 | break; | |||
| 649 | default: | |||
| 650 | case CH_NO'n': | |||
| 651 | didsub = 0; | |||
| 652 | BUILD(sp, s + offset, match[0].rm_eo - offset){ if (lbclen + (match[0].rm_eo - offset) > lblen) { lblen += (((lbclen + (match[0].rm_eo - offset)) > (256)) ? (lbclen + (match[0].rm_eo - offset)) : (256)); { void *tmpp; if (((tmpp ) = (realloc((lb), (lblen)))) == ((void *)0)) { msgq(((sp)), M_SYSERR , ((void *)0)); free(lb); } lb = tmpp; }; if (lb == ((void *) 0)) { lbclen = 0; return (1); } } memcpy(lb + lbclen, (s + offset ), (match[0].rm_eo - offset)); lbclen += (match[0].rm_eo - offset ); }; | |||
| 653 | goto skip; | |||
| 654 | case CH_QUIT'q': | |||
| 655 | /* Set the quit/interrupted flags. */ | |||
| 656 | lquit: quit = 1; | |||
| 657 | F_SET(sp->gp, G_INTERRUPTED)(((sp->gp)->flags) |= ((0x0004))); | |||
| 658 | ||||
| 659 | /* | |||
| 660 | * Resolve any changes, then return to (and | |||
| 661 | * exit from) the main loop. | |||
| 662 | */ | |||
| 663 | goto endmatch; | |||
| 664 | } | |||
| 665 | } | |||
| 666 | ||||
| 667 | /* | |||
| 668 | * Set the cursor to the last position changed, converting | |||
| 669 | * from 1-based to 0-based. | |||
| 670 | */ | |||
| 671 | sp->lno = lno; | |||
| 672 | sp->cno = match[0].rm_so; | |||
| 673 | ||||
| 674 | /* Copy the bytes before the match into the build buffer. */ | |||
| 675 | BUILD(sp, s + offset, match[0].rm_so - offset){ if (lbclen + (match[0].rm_so - offset) > lblen) { lblen += (((lbclen + (match[0].rm_so - offset)) > (256)) ? (lbclen + (match[0].rm_so - offset)) : (256)); { void *tmpp; if (((tmpp ) = (realloc((lb), (lblen)))) == ((void *)0)) { msgq(((sp)), M_SYSERR , ((void *)0)); free(lb); } lb = tmpp; }; if (lb == ((void *) 0)) { lbclen = 0; return (1); } } memcpy(lb + lbclen, (s + offset ), (match[0].rm_so - offset)); lbclen += (match[0].rm_so - offset ); }; | |||
| 676 | ||||
| 677 | /* Substitute the matching bytes. */ | |||
| 678 | didsub = 1; | |||
| 679 | if (re_sub(sp, s, &lb, &lbclen, &lblen, match)) | |||
| 680 | goto err; | |||
| 681 | ||||
| 682 | /* Set the change flag so we know this line was modified. */ | |||
| 683 | linechanged = 1; | |||
| 684 | ||||
| 685 | /* Move past the matched bytes. */ | |||
| 686 | skip: offset = match[0].rm_eo; | |||
| 687 | len = llen - match[0].rm_eo; | |||
| 688 | ||||
| 689 | /* A match cannot be followed by an empty pattern. */ | |||
| 690 | nempty = match[0].rm_eo; | |||
| 691 | ||||
| 692 | /* | |||
| 693 | * If doing a global change with confirmation, we have to | |||
| 694 | * update the screen. The basic idea is to store the line | |||
| 695 | * so the screen update routines can find it, and restart. | |||
| 696 | */ | |||
| 697 | if (didsub && sp->c_suffix && sp->g_suffix) { | |||
| 698 | /* | |||
| 699 | * The new search offset will be the end of the | |||
| 700 | * modified line. | |||
| 701 | */ | |||
| 702 | saved_offset = lbclen; | |||
| 703 | ||||
| 704 | /* Copy the rest of the line. */ | |||
| 705 | if (len) | |||
| 706 | BUILD(sp, s + offset, len){ if (lbclen + (len) > lblen) { lblen += (((lbclen + (len) ) > (256)) ? (lbclen + (len)) : (256)); { void *tmpp; if ( ((tmpp) = (realloc((lb), (lblen)))) == ((void *)0)) { msgq((( sp)), M_SYSERR, ((void *)0)); free(lb); } lb = tmpp; }; if (lb == ((void *)0)) { lbclen = 0; return (1); } } memcpy(lb + lbclen , (s + offset), (len)); lbclen += (len); } | |||
| 707 | ||||
| 708 | /* Set the new offset. */ | |||
| 709 | offset = saved_offset; | |||
| 710 | ||||
| 711 | /* Store inserted lines, adjusting the build buffer. */ | |||
| 712 | last = 0; | |||
| 713 | if (sp->newl_cnt) { | |||
| 714 | for (cnt = 0; | |||
| 715 | cnt < sp->newl_cnt; ++cnt, ++lno, ++elno) { | |||
| 716 | if (db_insert(sp, lno, | |||
| 717 | lb + last, sp->newl[cnt] - last)) | |||
| 718 | goto err; | |||
| 719 | last = sp->newl[cnt] + 1; | |||
| 720 | ++sp->rptlines[L_ADDED0]; | |||
| 721 | } | |||
| 722 | lbclen -= last; | |||
| 723 | offset -= last; | |||
| 724 | sp->newl_cnt = 0; | |||
| 725 | } | |||
| 726 | ||||
| 727 | /* Store and retrieve the line. */ | |||
| 728 | if (db_set(sp, lno, lb + last, lbclen)) | |||
| 729 | goto err; | |||
| 730 | if (db_get(sp, lno, DBG_FATAL0x001, &s, &llen)) | |||
| 731 | goto err; | |||
| 732 | ADD_SPACE_RET(sp, bp, blen, llen){ GS *L__gp = (sp) == ((void *)0) ? ((void *)0) : (sp)->gp ; if (L__gp != ((void *)0) && (bp) == L__gp->tmp_bp ) { (((L__gp)->flags) &= ~((0x0100))); { void *L__bincp ; if (((llen)) > (L__gp->tmp_blen)) { if ((L__bincp = binc (((sp)), (L__gp->tmp_bp), &(L__gp->tmp_blen), ((llen )))) == ((void *)0)) return (1); (L__gp->tmp_bp) = L__bincp ; } }; (bp) = L__gp->tmp_bp; (blen) = L__gp->tmp_blen; ( ((L__gp)->flags) |= ((0x0100))); } else { void *L__bincp; if (((llen)) > ((blen))) { if ((L__bincp = binc(((sp)), ((bp )), &((blen)), ((llen)))) == ((void *)0)) return (1); ((bp )) = L__bincp; } }; } | |||
| 733 | memcpy(bp, s, llen); | |||
| 734 | s = bp; | |||
| 735 | len = llen - offset; | |||
| 736 | ||||
| 737 | /* Restart the build. */ | |||
| 738 | lbclen = 0; | |||
| 739 | BUILD(sp, s, offset){ if (lbclen + (offset) > lblen) { lblen += (((lbclen + (offset )) > (256)) ? (lbclen + (offset)) : (256)); { void *tmpp; if (((tmpp) = (realloc((lb), (lblen)))) == ((void *)0)) { msgq( ((sp)), M_SYSERR, ((void *)0)); free(lb); } lb = tmpp; }; if ( lb == ((void *)0)) { lbclen = 0; return (1); } } memcpy(lb + lbclen , (s), (offset)); lbclen += (offset); }; | |||
| 740 | ||||
| 741 | /* | |||
| 742 | * If we haven't already done the after-the-string | |||
| 743 | * match, do one. Set REG_NOTEOL so the '$' pattern | |||
| 744 | * only matches once. | |||
| 745 | */ | |||
| 746 | if (!do_eol_match) | |||
| 747 | goto endmatch; | |||
| 748 | if (offset == len) { | |||
| 749 | do_eol_match = 0; | |||
| 750 | eflags |= REG_NOTEOL00002; | |||
| 751 | } | |||
| 752 | goto nextmatch; | |||
| 753 | } | |||
| 754 | ||||
| 755 | /* | |||
| 756 | * If it's a global: | |||
| 757 | * | |||
| 758 | * If at the end of the string, do a test for the after | |||
| 759 | * the string match. Set REG_NOTEOL so the '$' pattern | |||
| 760 | * only matches once. | |||
| 761 | */ | |||
| 762 | if (sp->g_suffix && do_eol_match) { | |||
| 763 | if (len == 0) { | |||
| 764 | do_eol_match = 0; | |||
| 765 | eflags |= REG_NOTEOL00002; | |||
| 766 | } | |||
| 767 | goto nextmatch; | |||
| 768 | } | |||
| 769 | ||||
| 770 | endmatch: if (!linechanged) | |||
| 771 | continue; | |||
| 772 | ||||
| 773 | /* Copy any remaining bytes into the build buffer. */ | |||
| 774 | if (len) | |||
| 775 | BUILD(sp, s + offset, len){ if (lbclen + (len) > lblen) { lblen += (((lbclen + (len) ) > (256)) ? (lbclen + (len)) : (256)); { void *tmpp; if ( ((tmpp) = (realloc((lb), (lblen)))) == ((void *)0)) { msgq((( sp)), M_SYSERR, ((void *)0)); free(lb); } lb = tmpp; }; if (lb == ((void *)0)) { lbclen = 0; return (1); } } memcpy(lb + lbclen , (s + offset), (len)); lbclen += (len); } | |||
| 776 | ||||
| 777 | /* Store inserted lines, adjusting the build buffer. */ | |||
| 778 | last = 0; | |||
| 779 | if (sp->newl_cnt) { | |||
| 780 | for (cnt = 0; | |||
| 781 | cnt < sp->newl_cnt; ++cnt, ++lno, ++elno) { | |||
| 782 | if (db_insert(sp, | |||
| 783 | lno, lb + last, sp->newl[cnt] - last)) | |||
| 784 | goto err; | |||
| 785 | last = sp->newl[cnt] + 1; | |||
| 786 | ++sp->rptlines[L_ADDED0]; | |||
| 787 | } | |||
| 788 | lbclen -= last; | |||
| 789 | sp->newl_cnt = 0; | |||
| 790 | } | |||
| 791 | ||||
| 792 | /* Store the changed line. */ | |||
| 793 | if (db_set(sp, lno, lb + last, lbclen)) | |||
| 794 | goto err; | |||
| 795 | ||||
| 796 | /* Update changed line counter. */ | |||
| 797 | if (sp->rptlchange != lno) { | |||
| 798 | sp->rptlchange = lno; | |||
| 799 | ++sp->rptlines[L_CHANGED1]; | |||
| 800 | } | |||
| 801 | ||||
| 802 | /* | |||
| 803 | * !!! | |||
| 804 | * Display as necessary. Historic practice is to only | |||
| 805 | * display the last line of a line split into multiple | |||
| 806 | * lines. | |||
| 807 | */ | |||
| 808 | if (lflag || nflag || pflag) { | |||
| 809 | from.lno = to.lno = lno; | |||
| 810 | from.cno = to.cno = 0; | |||
| 811 | if (lflag) | |||
| 812 | (void)ex_print(sp, cmdp, &from, &to, E_C_LIST0x00400); | |||
| 813 | if (nflag) | |||
| 814 | (void)ex_print(sp, cmdp, &from, &to, E_C_HASH0x00200); | |||
| 815 | if (pflag) | |||
| 816 | (void)ex_print(sp, cmdp, &from, &to, E_C_PRINT0x01000); | |||
| 817 | } | |||
| 818 | } | |||
| 819 | ||||
| 820 | /* | |||
| 821 | * !!! | |||
| 822 | * Historically, vi attempted to leave the cursor at the same place if | |||
| 823 | * the substitution was done at the current cursor position. Otherwise | |||
| 824 | * it moved it to the first non-blank of the last line changed. There | |||
| 825 | * were some problems: for example, :s/$/foo/ with the cursor on the | |||
| 826 | * last character of the line left the cursor on the last character, or | |||
| 827 | * the & command with multiple occurrences of the matching string in the | |||
| 828 | * line usually left the cursor in a fairly random position. | |||
| 829 | * | |||
| 830 | * We try to do the same thing, with the exception that if the user is | |||
| 831 | * doing substitution with confirmation, we move to the last line about | |||
| 832 | * which the user was consulted, as opposed to the last line that they | |||
| 833 | * actually changed. This prevents a screen flash if the user doesn't | |||
| 834 | * change many of the possible lines. | |||
| 835 | */ | |||
| 836 | if (!sp->c_suffix && (sp->lno != slno || sp->cno != scno)) { | |||
| 837 | sp->cno = 0; | |||
| 838 | (void)nonblank(sp, sp->lno, &sp->cno); | |||
| 839 | } | |||
| 840 | ||||
| 841 | /* | |||
| 842 | * If not in a global command, and nothing matched, say so. | |||
| 843 | * Else, if none of the lines displayed, put something up. | |||
| 844 | */ | |||
| 845 | rval = 0; | |||
| 846 | if (!matched) { | |||
| 847 | if (!F_ISSET(sp, SC_EX_GLOBAL)(((sp)->flags) & ((0x00020000)))) { | |||
| 848 | msgq(sp, M_ERR, "No match found"); | |||
| 849 | goto err; | |||
| 850 | } | |||
| 851 | } else if (!lflag && !nflag && !pflag) | |||
| 852 | F_SET(cmdp, E_AUTOPRINT)(((cmdp)->flags) |= ((0x00000040))); | |||
| 853 | ||||
| 854 | if (0) { | |||
| 855 | err: rval = 1; | |||
| 856 | } | |||
| 857 | ||||
| 858 | if (bp != NULL((void *)0)) | |||
| 859 | FREE_SPACE(sp, bp, blen){ GS *L__gp = (sp) == ((void *)0) ? ((void *)0) : (sp)->gp ; if (L__gp != ((void *)0) && (bp) == L__gp->tmp_bp ) (((L__gp)->flags) &= ~((0x0100))); else free(bp); }; | |||
| 860 | free(lb); | |||
| 861 | return (rval); | |||
| 862 | } | |||
| 863 | ||||
| 864 | /* | |||
| 865 | * re_compile -- | |||
| 866 | * Compile the RE. | |||
| 867 | * | |||
| 868 | * PUBLIC: int re_compile(SCR *, | |||
| 869 | * PUBLIC: char *, size_t, char **, size_t *, regex_t *, u_int); | |||
| 870 | */ | |||
| 871 | int | |||
| 872 | re_compile(SCR *sp, char *ptrn, size_t plen, char **ptrnp, size_t *lenp, | |||
| 873 | regex_t *rep, u_int flags) | |||
| 874 | { | |||
| 875 | size_t len; | |||
| 876 | int reflags, replaced, rval; | |||
| 877 | char *p; | |||
| 878 | ||||
| 879 | /* Set RE flags. */ | |||
| 880 | reflags = 0; | |||
| 881 | if (!LF_ISSET(RE_C_TAG)((flags) & ((0x0010)))) { | |||
| 882 | if (O_ISSET(sp, O_EXTENDED)((((&(((sp)))->opts[(((O_EXTENDED)))])->flags) & ((0x01))) ? (((sp)))->gp->opts[(((sp)))->opts[(((O_EXTENDED )))].o_cur.val].o_cur.val : (((sp)))->opts[(((O_EXTENDED)) )].o_cur.val)) | |||
| 883 | reflags |= REG_EXTENDED0001; | |||
| 884 | if (O_ISSET(sp, O_IGNORECASE)((((&(((sp)))->opts[(((O_IGNORECASE)))])->flags) & ((0x01))) ? (((sp)))->gp->opts[(((sp)))->opts[(((O_IGNORECASE )))].o_cur.val].o_cur.val : (((sp)))->opts[(((O_IGNORECASE )))].o_cur.val)) | |||
| 885 | reflags |= REG_ICASE0002; | |||
| 886 | if (O_ISSET(sp, O_ICLOWER)((((&(((sp)))->opts[(((O_ICLOWER)))])->flags) & ((0x01))) ? (((sp)))->gp->opts[(((sp)))->opts[(((O_ICLOWER )))].o_cur.val].o_cur.val : (((sp)))->opts[(((O_ICLOWER))) ].o_cur.val)) { | |||
| 887 | for (p = ptrn, len = plen; len > 0; ++p, --len) | |||
| 888 | if (isupper(*p)) | |||
| 889 | break; | |||
| 890 | if (len == 0) | |||
| 891 | reflags |= REG_ICASE0002; | |||
| 892 | } | |||
| 893 | } | |||
| 894 | ||||
| 895 | /* If we're replacing a saved value, clear the old one. */ | |||
| 896 | if (LF_ISSET(RE_C_SEARCH)((flags) & ((0x0002))) && F_ISSET(sp, SC_RE_SEARCH)(((sp)->flags) & ((0x00400000)))) { | |||
| 897 | regfree(&sp->re_c); | |||
| 898 | F_CLR(sp, SC_RE_SEARCH)(((sp)->flags) &= ~((0x00400000))); | |||
| 899 | } | |||
| 900 | if (LF_ISSET(RE_C_SUBST)((flags) & ((0x0008))) && F_ISSET(sp, SC_RE_SUBST)(((sp)->flags) & ((0x00800000)))) { | |||
| 901 | regfree(&sp->subre_c); | |||
| 902 | F_CLR(sp, SC_RE_SUBST)(((sp)->flags) &= ~((0x00800000))); | |||
| 903 | } | |||
| 904 | ||||
| 905 | /* | |||
| 906 | * If we're saving the string, it's a pattern we haven't seen before, | |||
| 907 | * so convert the vi-style RE's to POSIX 1003.2 RE's. Save a copy for | |||
| 908 | * later recompilation. Free any previously saved value. | |||
| 909 | */ | |||
| 910 | if (ptrnp != NULL((void *)0)) { | |||
| 911 | if (LF_ISSET(RE_C_TAG)((flags) & ((0x0010)))) { | |||
| 912 | if (re_tag_conv(sp, &ptrn, &plen, &replaced)) | |||
| 913 | return (1); | |||
| 914 | } else | |||
| 915 | if (re_conv(sp, &ptrn, &plen, &replaced)) | |||
| 916 | return (1); | |||
| 917 | ||||
| 918 | /* Discard previous pattern. */ | |||
| 919 | free(*ptrnp); | |||
| 920 | *ptrnp = NULL((void *)0); | |||
| 921 | if (lenp != NULL((void *)0)) | |||
| 922 | *lenp = plen; | |||
| 923 | ||||
| 924 | /* | |||
| 925 | * Copy the string into allocated memory. | |||
| 926 | * | |||
| 927 | * XXX | |||
| 928 | * Regcomp isn't 8-bit clean, so the pattern is nul-terminated | |||
| 929 | * for now. There's just no other solution. | |||
| 930 | */ | |||
| 931 | MALLOC(sp, *ptrnp, plen + 1){ if (((*ptrnp) = malloc(plen + 1)) == ((void *)0)) msgq((sp) , M_SYSERR, ((void *)0)); }; | |||
| 932 | if (*ptrnp != NULL((void *)0)) { | |||
| 933 | memcpy(*ptrnp, ptrn, plen); | |||
| 934 | (*ptrnp)[plen] = '\0'; | |||
| 935 | } | |||
| 936 | ||||
| 937 | /* Free up conversion-routine-allocated memory. */ | |||
| 938 | if (replaced) | |||
| 939 | FREE_SPACE(sp, ptrn, 0){ GS *L__gp = (sp) == ((void *)0) ? ((void *)0) : (sp)->gp ; if (L__gp != ((void *)0) && (ptrn) == L__gp->tmp_bp ) (((L__gp)->flags) &= ~((0x0100))); else free(ptrn); }; | |||
| 940 | ||||
| 941 | if (*ptrnp == NULL((void *)0)) | |||
| 942 | return (1); | |||
| 943 | ||||
| 944 | ptrn = *ptrnp; | |||
| 945 | } | |||
| 946 | ||||
| 947 | /* | |||
| 948 | * XXX | |||
| 949 | * Regcomp isn't 8-bit clean, so we just lost if the pattern | |||
| 950 | * contained a nul. Bummer! | |||
| 951 | */ | |||
| 952 | if ((rval = regcomp(rep, ptrn, /* plen, */ reflags)) != 0) { | |||
| 953 | if (!LF_ISSET(RE_C_SILENT)((flags) & ((0x0004)))) | |||
| 954 | re_error(sp, rval, rep); | |||
| 955 | return (1); | |||
| 956 | } | |||
| 957 | ||||
| 958 | if (LF_ISSET(RE_C_SEARCH)((flags) & ((0x0002)))) | |||
| 959 | F_SET(sp, SC_RE_SEARCH)(((sp)->flags) |= ((0x00400000))); | |||
| 960 | if (LF_ISSET(RE_C_SUBST)((flags) & ((0x0008)))) | |||
| 961 | F_SET(sp, SC_RE_SUBST)(((sp)->flags) |= ((0x00800000))); | |||
| 962 | ||||
| 963 | return (0); | |||
| 964 | } | |||
| 965 | ||||
| 966 | /* | |||
| 967 | * re_conv -- | |||
| 968 | * Convert vi's regular expressions into something that the | |||
| 969 | * the POSIX 1003.2 RE functions can handle. | |||
| 970 | * | |||
| 971 | * There are two conversions we make to make vi's RE's (specifically | |||
| 972 | * the global, search, and substitute patterns) work with POSIX RE's. | |||
| 973 | * We assume that \<ptrn\> does "word" searches, which is non-standard | |||
| 974 | * but supported by most regexp libraries.. | |||
| 975 | * | |||
| 976 | * 1: If O_MAGIC is not set, strip backslashes from the magic character | |||
| 977 | * set (.[*~) that have them, and add them to the ones that don't. | |||
| 978 | * 2: If O_MAGIC is not set, the string "\~" is replaced with the text | |||
| 979 | * from the last substitute command's replacement string. If O_MAGIC | |||
| 980 | * is set, it's the string "~". | |||
| 981 | * | |||
| 982 | * !!!/XXX | |||
| 983 | * This doesn't exactly match the historic behavior of vi because we do | |||
| 984 | * the ~ substitution before calling the RE engine, so magic characters | |||
| 985 | * in the replacement string will be expanded by the RE engine, and they | |||
| 986 | * weren't historically. It's a bug. | |||
| 987 | */ | |||
| 988 | static int | |||
| 989 | re_conv(SCR *sp, char **ptrnp, size_t *plenp, int *replacedp) | |||
| 990 | { | |||
| 991 | size_t blen, len, needlen; | |||
| 992 | int magic; | |||
| 993 | char *bp, *p, *t; | |||
| 994 | ||||
| 995 | /* | |||
| 996 | * First pass through, we figure out how much space we'll need. | |||
| 997 | * We do it in two passes, on the grounds that most of the time | |||
| 998 | * the user is doing a search and won't have magic characters. | |||
| 999 | * That way we can skip most of the memory allocation and copies. | |||
| 1000 | */ | |||
| 1001 | magic = 0; | |||
| 1002 | for (p = *ptrnp, len = *plenp, needlen = 0; len > 0; ++p, --len) | |||
| ||||
| 1003 | switch (*p) { | |||
| 1004 | case '\\': | |||
| 1005 | if (len > 1) { | |||
| 1006 | --len; | |||
| 1007 | switch (*++p) { | |||
| 1008 | case '~': | |||
| 1009 | if (!O_ISSET(sp, O_MAGIC)((((&(((sp)))->opts[(((O_MAGIC)))])->flags) & ( (0x01))) ? (((sp)))->gp->opts[(((sp)))->opts[(((O_MAGIC )))].o_cur.val].o_cur.val : (((sp)))->opts[(((O_MAGIC)))]. o_cur.val)) { | |||
| 1010 | magic = 1; | |||
| 1011 | needlen += sp->repl_len; | |||
| 1012 | } | |||
| 1013 | break; | |||
| 1014 | case '.': | |||
| 1015 | case '[': | |||
| 1016 | case '*': | |||
| 1017 | if (!O_ISSET(sp, O_MAGIC)((((&(((sp)))->opts[(((O_MAGIC)))])->flags) & ( (0x01))) ? (((sp)))->gp->opts[(((sp)))->opts[(((O_MAGIC )))].o_cur.val].o_cur.val : (((sp)))->opts[(((O_MAGIC)))]. o_cur.val)) { | |||
| 1018 | magic = 1; | |||
| 1019 | needlen += 1; | |||
| 1020 | } | |||
| 1021 | break; | |||
| 1022 | default: | |||
| 1023 | needlen += 2; | |||
| 1024 | } | |||
| 1025 | } else | |||
| 1026 | needlen += 1; | |||
| 1027 | break; | |||
| 1028 | case '~': | |||
| 1029 | if (O_ISSET(sp, O_MAGIC)((((&(((sp)))->opts[(((O_MAGIC)))])->flags) & ( (0x01))) ? (((sp)))->gp->opts[(((sp)))->opts[(((O_MAGIC )))].o_cur.val].o_cur.val : (((sp)))->opts[(((O_MAGIC)))]. o_cur.val)) { | |||
| 1030 | magic = 1; | |||
| 1031 | needlen += sp->repl_len; | |||
| 1032 | } | |||
| 1033 | break; | |||
| 1034 | case '.': | |||
| 1035 | case '[': | |||
| 1036 | case '*': | |||
| 1037 | if (!O_ISSET(sp, O_MAGIC)((((&(((sp)))->opts[(((O_MAGIC)))])->flags) & ( (0x01))) ? (((sp)))->gp->opts[(((sp)))->opts[(((O_MAGIC )))].o_cur.val].o_cur.val : (((sp)))->opts[(((O_MAGIC)))]. o_cur.val)) { | |||
| 1038 | magic = 1; | |||
| 1039 | needlen += 2; | |||
| 1040 | } | |||
| 1041 | break; | |||
| 1042 | default: | |||
| 1043 | needlen += 1; | |||
| 1044 | break; | |||
| 1045 | } | |||
| 1046 | ||||
| 1047 | if (!magic
| |||
| 1048 | *replacedp = 0; | |||
| 1049 | return (0); | |||
| 1050 | } | |||
| 1051 | ||||
| 1052 | /* Get enough memory to hold the final pattern. */ | |||
| 1053 | *replacedp = 1; | |||
| 1054 | GET_SPACE_RET(sp, bp, blen, needlen){ GS *L__gp = (sp) == ((void *)0) ? ((void *)0) : (sp)->gp ; if (L__gp == ((void *)0) || (((L__gp)->flags) & ((0x0100 )))) { (bp) = ((void *)0); (blen) = 0; { void *L__bincp; if ( ((needlen)) > ((blen))) { if ((L__bincp = binc(((sp)), ((bp )), &((blen)), ((needlen)))) == ((void *)0)) return (1); ( (bp)) = L__bincp; } }; } else { { void *L__bincp; if (((needlen )) > (L__gp->tmp_blen)) { if ((L__bincp = binc(((sp)), ( L__gp->tmp_bp), &(L__gp->tmp_blen), ((needlen)))) == ((void *)0)) return (1); (L__gp->tmp_bp) = L__bincp; } }; (bp) = L__gp->tmp_bp; (blen) = L__gp->tmp_blen; (((L__gp )->flags) |= ((0x0100))); } }; | |||
| 1055 | ||||
| 1056 | for (p = *ptrnp, len = *plenp, t = bp; len > 0; ++p, --len) | |||
| 1057 | switch (*p) { | |||
| 1058 | case '\\': | |||
| 1059 | if (len > 1) { | |||
| 1060 | --len; | |||
| 1061 | switch (*++p) { | |||
| 1062 | case '~': | |||
| 1063 | if (O_ISSET(sp, O_MAGIC)((((&(((sp)))->opts[(((O_MAGIC)))])->flags) & ( (0x01))) ? (((sp)))->gp->opts[(((sp)))->opts[(((O_MAGIC )))].o_cur.val].o_cur.val : (((sp)))->opts[(((O_MAGIC)))]. o_cur.val)) | |||
| 1064 | *t++ = '~'; | |||
| 1065 | else { | |||
| 1066 | memcpy(t, | |||
| 1067 | sp->repl, sp->repl_len); | |||
| 1068 | t += sp->repl_len; | |||
| 1069 | } | |||
| 1070 | break; | |||
| 1071 | case '.': | |||
| 1072 | case '[': | |||
| 1073 | case '*': | |||
| 1074 | if (O_ISSET(sp, O_MAGIC)((((&(((sp)))->opts[(((O_MAGIC)))])->flags) & ( (0x01))) ? (((sp)))->gp->opts[(((sp)))->opts[(((O_MAGIC )))].o_cur.val].o_cur.val : (((sp)))->opts[(((O_MAGIC)))]. o_cur.val)) | |||
| 1075 | *t++ = '\\'; | |||
| 1076 | *t++ = *p; | |||
| 1077 | break; | |||
| 1078 | default: | |||
| 1079 | *t++ = '\\'; | |||
| 1080 | *t++ = *p; | |||
| 1081 | } | |||
| 1082 | } else | |||
| 1083 | *t++ = '\\'; | |||
| 1084 | break; | |||
| 1085 | case '~': | |||
| 1086 | if (O_ISSET(sp, O_MAGIC)((((&(((sp)))->opts[(((O_MAGIC)))])->flags) & ( (0x01))) ? (((sp)))->gp->opts[(((sp)))->opts[(((O_MAGIC )))].o_cur.val].o_cur.val : (((sp)))->opts[(((O_MAGIC)))]. o_cur.val)) { | |||
| 1087 | memcpy(t, sp->repl, sp->repl_len); | |||
| 1088 | t += sp->repl_len; | |||
| 1089 | } else | |||
| 1090 | *t++ = '~'; | |||
| 1091 | break; | |||
| 1092 | case '.': | |||
| 1093 | case '[': | |||
| 1094 | case '*': | |||
| 1095 | if (!O_ISSET(sp, O_MAGIC)((((&(((sp)))->opts[(((O_MAGIC)))])->flags) & ( (0x01))) ? (((sp)))->gp->opts[(((sp)))->opts[(((O_MAGIC )))].o_cur.val].o_cur.val : (((sp)))->opts[(((O_MAGIC)))]. o_cur.val)) | |||
| 1096 | *t++ = '\\'; | |||
| 1097 | *t++ = *p; | |||
| ||||
| 1098 | break; | |||
| 1099 | default: | |||
| 1100 | *t++ = *p; | |||
| 1101 | break; | |||
| 1102 | } | |||
| 1103 | ||||
| 1104 | *ptrnp = bp; | |||
| 1105 | *plenp = t - bp; | |||
| 1106 | return (0); | |||
| 1107 | } | |||
| 1108 | ||||
| 1109 | /* | |||
| 1110 | * re_tag_conv -- | |||
| 1111 | * Convert a tags search path into something that the POSIX | |||
| 1112 | * 1003.2 RE functions can handle. | |||
| 1113 | */ | |||
| 1114 | static int | |||
| 1115 | re_tag_conv(SCR *sp, char **ptrnp, size_t *plenp, int *replacedp) | |||
| 1116 | { | |||
| 1117 | size_t blen, len; | |||
| 1118 | int lastdollar; | |||
| 1119 | char *bp, *p, *t; | |||
| 1120 | ||||
| 1121 | len = *plenp; | |||
| 1122 | ||||
| 1123 | /* Max memory usage is 2 times the length of the string. */ | |||
| 1124 | *replacedp = 1; | |||
| 1125 | GET_SPACE_RET(sp, bp, blen, len * 2){ GS *L__gp = (sp) == ((void *)0) ? ((void *)0) : (sp)->gp ; if (L__gp == ((void *)0) || (((L__gp)->flags) & ((0x0100 )))) { (bp) = ((void *)0); (blen) = 0; { void *L__bincp; if ( ((len * 2)) > ((blen))) { if ((L__bincp = binc(((sp)), ((bp )), &((blen)), ((len * 2)))) == ((void *)0)) return (1); ( (bp)) = L__bincp; } }; } else { { void *L__bincp; if (((len * 2)) > (L__gp->tmp_blen)) { if ((L__bincp = binc(((sp)) , (L__gp->tmp_bp), &(L__gp->tmp_blen), ((len * 2))) ) == ((void *)0)) return (1); (L__gp->tmp_bp) = L__bincp; } }; (bp) = L__gp->tmp_bp; (blen) = L__gp->tmp_blen; ((( L__gp)->flags) |= ((0x0100))); } }; | |||
| 1126 | ||||
| 1127 | p = *ptrnp; | |||
| 1128 | t = bp; | |||
| 1129 | ||||
| 1130 | /* If the last character is a '/' or '?', we just strip it. */ | |||
| 1131 | if (len > 0 && (p[len - 1] == '/' || p[len - 1] == '?')) | |||
| 1132 | --len; | |||
| 1133 | ||||
| 1134 | /* If the next-to-last or last character is a '$', it's magic. */ | |||
| 1135 | if (len > 0 && p[len - 1] == '$') { | |||
| 1136 | --len; | |||
| 1137 | lastdollar = 1; | |||
| 1138 | } else | |||
| 1139 | lastdollar = 0; | |||
| 1140 | ||||
| 1141 | /* If the first character is a '/' or '?', we just strip it. */ | |||
| 1142 | if (len > 0 && (p[0] == '/' || p[0] == '?')) { | |||
| 1143 | ++p; | |||
| 1144 | --len; | |||
| 1145 | } | |||
| 1146 | ||||
| 1147 | /* If the first or second character is a '^', it's magic. */ | |||
| 1148 | if (p[0] == '^') { | |||
| 1149 | *t++ = *p++; | |||
| 1150 | --len; | |||
| 1151 | } | |||
| 1152 | ||||
| 1153 | /* | |||
| 1154 | * Escape every other magic character we can find, meanwhile stripping | |||
| 1155 | * the backslashes ctags inserts when escaping the search delimiter | |||
| 1156 | * characters. | |||
| 1157 | */ | |||
| 1158 | for (; len > 0; --len) { | |||
| 1159 | if (p[0] == '\\' && (p[1] == '/' || p[1] == '?')) { | |||
| 1160 | ++p; | |||
| 1161 | --len; | |||
| 1162 | } else if (strchr("^.[]$*", p[0])) | |||
| 1163 | *t++ = '\\'; | |||
| 1164 | *t++ = *p++; | |||
| 1165 | if (len == 0) | |||
| 1166 | break; | |||
| 1167 | } | |||
| 1168 | if (lastdollar) | |||
| 1169 | *t++ = '$'; | |||
| 1170 | ||||
| 1171 | *ptrnp = bp; | |||
| 1172 | *plenp = t - bp; | |||
| 1173 | return (0); | |||
| 1174 | } | |||
| 1175 | ||||
| 1176 | /* | |||
| 1177 | * re_error -- | |||
| 1178 | * Report a regular expression error. | |||
| 1179 | * | |||
| 1180 | * PUBLIC: void re_error(SCR *, int, regex_t *); | |||
| 1181 | */ | |||
| 1182 | void | |||
| 1183 | re_error(SCR *sp, int errcode, regex_t *preg) | |||
| 1184 | { | |||
| 1185 | size_t s; | |||
| 1186 | char *oe; | |||
| 1187 | ||||
| 1188 | s = regerror(errcode, preg, "", 0); | |||
| 1189 | if ((oe = malloc(s)) == NULL((void *)0)) | |||
| 1190 | msgq(sp, M_SYSERR, NULL((void *)0)); | |||
| 1191 | else { | |||
| 1192 | (void)regerror(errcode, preg, oe, s); | |||
| 1193 | msgq(sp, M_ERR, "RE error: %s", oe); | |||
| 1194 | free(oe); | |||
| 1195 | } | |||
| 1196 | } | |||
| 1197 | ||||
| 1198 | /* | |||
| 1199 | * re_sub -- | |||
| 1200 | * Do the substitution for a regular expression. | |||
| 1201 | */ | |||
| 1202 | static int | |||
| 1203 | re_sub(SCR *sp, char *ip, char **lbp, size_t *lbclenp, size_t *lblenp, | |||
| 1204 | regmatch_t match[10]) | |||
| 1205 | { | |||
| 1206 | enum { C_NOTSET, C_LOWER, C_ONELOWER, C_ONEUPPER, C_UPPER } conv; | |||
| 1207 | size_t lbclen, lblen; /* Local copies. */ | |||
| 1208 | size_t mlen; /* Match length. */ | |||
| 1209 | size_t rpl; /* Remaining replacement length. */ | |||
| 1210 | char *rp; /* Replacement pointer. */ | |||
| 1211 | int ch; | |||
| 1212 | int no; /* Match replacement offset. */ | |||
| 1213 | char *p, *t; /* Buffer pointers. */ | |||
| 1214 | char *lb; /* Local copies. */ | |||
| 1215 | ||||
| 1216 | lb = *lbp; /* Get local copies. */ | |||
| 1217 | lbclen = *lbclenp; | |||
| 1218 | lblen = *lblenp; | |||
| 1219 | ||||
| 1220 | /* | |||
| 1221 | * QUOTING NOTE: | |||
| 1222 | * | |||
| 1223 | * There are some special sequences that vi provides in the | |||
| 1224 | * replacement patterns. | |||
| 1225 | * & string the RE matched (\& if nomagic set) | |||
| 1226 | * \# n-th regular subexpression | |||
| 1227 | * \E end \U, \L conversion | |||
| 1228 | * \e end \U, \L conversion | |||
| 1229 | * \l convert the next character to lower-case | |||
| 1230 | * \L convert to lower-case, until \E, \e, or end of replacement | |||
| 1231 | * \u convert the next character to upper-case | |||
| 1232 | * \U convert to upper-case, until \E, \e, or end of replacement | |||
| 1233 | * | |||
| 1234 | * Otherwise, since this is the lowest level of replacement, discard | |||
| 1235 | * all escaping characters. This (hopefully) matches historic practice. | |||
| 1236 | */ | |||
| 1237 | #define OUTCH(ch, nltrans){ CHAR_T __ch = (ch); u_int __value = ((unsigned char)(__ch) <= 254 ? (sp)->gp->special_key[(unsigned char)(__ch)] : ( unsigned char)(__ch) > (sp)->gp->max_special ? 0 : v_key_val ((sp),(__ch))); if ((nltrans) && (__value == K_CR || __value == K_NL)) { { if ((sp)->newl_len == (sp)->newl_cnt) { ( sp)->newl_len += 25; { void *tmpp; if (((tmpp) = (reallocarray (((sp)->newl), ((sp)->newl_len), (sizeof(size_t))))) == ((void *)0)) { msgq(((sp)), M_SYSERR, ((void *)0)); free((sp )->newl); } (sp)->newl = tmpp; }; if ((sp)->newl == ( (void *)0)) { (sp)->newl_len = 0; return (1); } } }; sp-> newl[sp->newl_cnt++] = lbclen; } else if (conv != C_NOTSET ) { switch (conv) { case C_ONELOWER: conv = C_NOTSET; case C_LOWER : if (isupper(__ch)) __ch = tolower(__ch); break; case C_ONEUPPER : conv = C_NOTSET; case C_UPPER: if (islower(__ch)) __ch = toupper (__ch); break; default: abort(); } } { if (lbclen + (1) > lblen ) { lblen += (((lbclen + (1)) > (256)) ? (lbclen + (1)) : ( 256)); { void *tmpp; if (((tmpp) = (realloc((lb), (lblen)))) == ((void *)0)) { msgq(((sp)), M_SYSERR, ((void *)0)); free(lb) ; } lb = tmpp; }; if (lb == ((void *)0)) { lbclen = 0; return (1); } (p) = lb + lbclen; } }; *p++ = __ch; ++lbclen; } { \ | |||
| 1238 | CHAR_T __ch = (ch); \ | |||
| 1239 | u_int __value = KEY_VAL(sp, __ch)((unsigned char)(__ch) <= 254 ? (sp)->gp->special_key [(unsigned char)(__ch)] : (unsigned char)(__ch) > (sp)-> gp->max_special ? 0 : v_key_val((sp),(__ch))); \ | |||
| 1240 | if ((nltrans) && (__value == K_CR || __value == K_NL)) { \ | |||
| 1241 | NEEDNEWLINE(sp){ if ((sp)->newl_len == (sp)->newl_cnt) { (sp)->newl_len += 25; { void *tmpp; if (((tmpp) = (reallocarray(((sp)->newl ), ((sp)->newl_len), (sizeof(size_t))))) == ((void *)0)) { msgq(((sp)), M_SYSERR, ((void *)0)); free((sp)->newl); } ( sp)->newl = tmpp; }; if ((sp)->newl == ((void *)0)) { ( sp)->newl_len = 0; return (1); } } }; \ | |||
| 1242 | sp->newl[sp->newl_cnt++] = lbclen; \ | |||
| 1243 | } else if (conv != C_NOTSET) { \ | |||
| 1244 | switch (conv) { \ | |||
| 1245 | case C_ONELOWER: \ | |||
| 1246 | conv = C_NOTSET; \ | |||
| 1247 | /* FALLTHROUGH */ \ | |||
| 1248 | case C_LOWER: \ | |||
| 1249 | if (isupper(__ch)) \ | |||
| 1250 | __ch = tolower(__ch); \ | |||
| 1251 | break; \ | |||
| 1252 | case C_ONEUPPER: \ | |||
| 1253 | conv = C_NOTSET; \ | |||
| 1254 | /* FALLTHROUGH */ \ | |||
| 1255 | case C_UPPER: \ | |||
| 1256 | if (islower(__ch)) \ | |||
| 1257 | __ch = toupper(__ch); \ | |||
| 1258 | break; \ | |||
| 1259 | default: \ | |||
| 1260 | abort(); \ | |||
| 1261 | } \ | |||
| 1262 | } \ | |||
| 1263 | NEEDSP(sp, 1, p){ if (lbclen + (1) > lblen) { lblen += (((lbclen + (1)) > (256)) ? (lbclen + (1)) : (256)); { void *tmpp; if (((tmpp) = (realloc((lb), (lblen)))) == ((void *)0)) { msgq(((sp)), M_SYSERR , ((void *)0)); free(lb); } lb = tmpp; }; if (lb == ((void *) 0)) { lbclen = 0; return (1); } (p) = lb + lbclen; } }; \ | |||
| 1264 | *p++ = __ch; \ | |||
| 1265 | ++lbclen; \ | |||
| 1266 | } | |||
| 1267 | conv = C_NOTSET; | |||
| 1268 | for (rp = sp->repl, rpl = sp->repl_len, p = lb + lbclen; rpl--;) { | |||
| 1269 | switch (ch = *rp++) { | |||
| 1270 | case '&': | |||
| 1271 | if (O_ISSET(sp, O_MAGIC)((((&(((sp)))->opts[(((O_MAGIC)))])->flags) & ( (0x01))) ? (((sp)))->gp->opts[(((sp)))->opts[(((O_MAGIC )))].o_cur.val].o_cur.val : (((sp)))->opts[(((O_MAGIC)))]. o_cur.val)) { | |||
| 1272 | no = 0; | |||
| 1273 | goto subzero; | |||
| 1274 | } | |||
| 1275 | break; | |||
| 1276 | case '\\': | |||
| 1277 | if (rpl == 0) | |||
| 1278 | break; | |||
| 1279 | --rpl; | |||
| 1280 | switch (ch = *rp) { | |||
| 1281 | case '&': | |||
| 1282 | ++rp; | |||
| 1283 | if (!O_ISSET(sp, O_MAGIC)((((&(((sp)))->opts[(((O_MAGIC)))])->flags) & ( (0x01))) ? (((sp)))->gp->opts[(((sp)))->opts[(((O_MAGIC )))].o_cur.val].o_cur.val : (((sp)))->opts[(((O_MAGIC)))]. o_cur.val)) { | |||
| 1284 | no = 0; | |||
| 1285 | goto subzero; | |||
| 1286 | } | |||
| 1287 | break; | |||
| 1288 | case '0': case '1': case '2': case '3': case '4': | |||
| 1289 | case '5': case '6': case '7': case '8': case '9': | |||
| 1290 | no = *rp++ - '0'; | |||
| 1291 | subzero: if (match[no].rm_so == -1 || | |||
| 1292 | match[no].rm_eo == -1) | |||
| 1293 | break; | |||
| 1294 | mlen = match[no].rm_eo - match[no].rm_so; | |||
| 1295 | for (t = ip + match[no].rm_so; mlen--; ++t) | |||
| 1296 | OUTCH(*t, 0){ CHAR_T __ch = (*t); u_int __value = ((unsigned char)(__ch) <= 254 ? (sp)->gp->special_key[(unsigned char)(__ch)] : ( unsigned char)(__ch) > (sp)->gp->max_special ? 0 : v_key_val ((sp),(__ch))); if ((0) && (__value == K_CR || __value == K_NL)) { { if ((sp)->newl_len == (sp)->newl_cnt) { ( sp)->newl_len += 25; { void *tmpp; if (((tmpp) = (reallocarray (((sp)->newl), ((sp)->newl_len), (sizeof(size_t))))) == ((void *)0)) { msgq(((sp)), M_SYSERR, ((void *)0)); free((sp )->newl); } (sp)->newl = tmpp; }; if ((sp)->newl == ( (void *)0)) { (sp)->newl_len = 0; return (1); } } }; sp-> newl[sp->newl_cnt++] = lbclen; } else if (conv != C_NOTSET ) { switch (conv) { case C_ONELOWER: conv = C_NOTSET; case C_LOWER : if (isupper(__ch)) __ch = tolower(__ch); break; case C_ONEUPPER : conv = C_NOTSET; case C_UPPER: if (islower(__ch)) __ch = toupper (__ch); break; default: abort(); } } { if (lbclen + (1) > lblen ) { lblen += (((lbclen + (1)) > (256)) ? (lbclen + (1)) : ( 256)); { void *tmpp; if (((tmpp) = (realloc((lb), (lblen)))) == ((void *)0)) { msgq(((sp)), M_SYSERR, ((void *)0)); free(lb) ; } lb = tmpp; }; if (lb == ((void *)0)) { lbclen = 0; return (1); } (p) = lb + lbclen; } }; *p++ = __ch; ++lbclen; }; | |||
| 1297 | continue; | |||
| 1298 | case 'e': | |||
| 1299 | case 'E': | |||
| 1300 | ++rp; | |||
| 1301 | conv = C_NOTSET; | |||
| 1302 | continue; | |||
| 1303 | case 'l': | |||
| 1304 | ++rp; | |||
| 1305 | conv = C_ONELOWER; | |||
| 1306 | continue; | |||
| 1307 | case 'L': | |||
| 1308 | ++rp; | |||
| 1309 | conv = C_LOWER; | |||
| 1310 | continue; | |||
| 1311 | case 'u': | |||
| 1312 | ++rp; | |||
| 1313 | conv = C_ONEUPPER; | |||
| 1314 | continue; | |||
| 1315 | case 'U': | |||
| 1316 | ++rp; | |||
| 1317 | conv = C_UPPER; | |||
| 1318 | continue; | |||
| 1319 | default: | |||
| 1320 | ++rp; | |||
| 1321 | break; | |||
| 1322 | } | |||
| 1323 | } | |||
| 1324 | OUTCH(ch, 1){ CHAR_T __ch = (ch); u_int __value = ((unsigned char)(__ch) <= 254 ? (sp)->gp->special_key[(unsigned char)(__ch)] : ( unsigned char)(__ch) > (sp)->gp->max_special ? 0 : v_key_val ((sp),(__ch))); if ((1) && (__value == K_CR || __value == K_NL)) { { if ((sp)->newl_len == (sp)->newl_cnt) { ( sp)->newl_len += 25; { void *tmpp; if (((tmpp) = (reallocarray (((sp)->newl), ((sp)->newl_len), (sizeof(size_t))))) == ((void *)0)) { msgq(((sp)), M_SYSERR, ((void *)0)); free((sp )->newl); } (sp)->newl = tmpp; }; if ((sp)->newl == ( (void *)0)) { (sp)->newl_len = 0; return (1); } } }; sp-> newl[sp->newl_cnt++] = lbclen; } else if (conv != C_NOTSET ) { switch (conv) { case C_ONELOWER: conv = C_NOTSET; case C_LOWER : if (isupper(__ch)) __ch = tolower(__ch); break; case C_ONEUPPER : conv = C_NOTSET; case C_UPPER: if (islower(__ch)) __ch = toupper (__ch); break; default: abort(); } } { if (lbclen + (1) > lblen ) { lblen += (((lbclen + (1)) > (256)) ? (lbclen + (1)) : ( 256)); { void *tmpp; if (((tmpp) = (realloc((lb), (lblen)))) == ((void *)0)) { msgq(((sp)), M_SYSERR, ((void *)0)); free(lb) ; } lb = tmpp; }; if (lb == ((void *)0)) { lbclen = 0; return (1); } (p) = lb + lbclen; } }; *p++ = __ch; ++lbclen; }; | |||
| 1325 | } | |||
| 1326 | ||||
| 1327 | *lbp = lb; /* Update caller's information. */ | |||
| 1328 | *lbclenp = lbclen; | |||
| 1329 | *lblenp = lblen; | |||
| 1330 | return (0); | |||
| 1331 | } |