2 * Copyright (c) 1988, 1989, 1990, 1993
3 * The Regents of the University of California. All rights reserved.
4 * Copyright (c) 1989 by Berkeley Softworks
7 * This code is derived from software contributed to Berkeley by
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20 * This product includes software developed by the University of
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38 * @(#)str.c 5.8 (Berkeley) 6/1/90
39 * $FreeBSD: src/usr.bin/make/str.c,v 1.12.2.2 2004/02/23 12:10:57 ru Exp $
40 * $DragonFly: src/usr.bin/make/str.c,v 1.11 2004/12/16 00:17:05 okumoto Exp $
45 static char **argv, *buffer;
46 static int argmax, curlen;
50 * Initialize the strings package
58 argv = emalloc(((argmax = 50) + 1) * sizeof(char *));
59 argv[0] = Var_Value(".MAKE", VAR_GLOBAL, &p1);
65 * Cleanup the strings package
82 * concatenate the two strings, inserting a space or slash between them,
83 * freeing them if requested.
86 * the resulting string in allocated space.
89 str_concat(const char *s1, const char *s2, int flags)
94 /* get the length of both strings */
98 /* allocate length plus separator plus EOS */
99 result = emalloc(len1 + len2 + 2);
101 /* copy first string into place */
102 memcpy(result, s1, len1);
104 /* add separator character */
105 if (flags & STR_ADDSPACE) {
108 } else if (flags & STR_ADDSLASH) {
113 /* copy second string plus EOS into place */
114 memcpy(result + len1, s2, len2 + 1);
120 * Fracture a string into an array of words (as delineated by tabs or
121 * spaces) taking quotation marks into account. Leading tabs/spaces
125 * Pointer to the array of pointers to the words. To make life easier,
126 * the first word is always the value of the .MAKE variable.
129 brk_string(char *str, int *store_argc, Boolean expand)
132 char inquote, *p, *start, *t;
135 /* skip leading space chars. */
136 for (; *str == ' ' || *str == '\t'; ++str)
139 /* allocate room for a copy of the string */
140 if ((len = strlen(str) + 1) > curlen) {
143 buffer = emalloc(curlen = len);
147 * copy the string; at the same time, parse backslashes,
148 * quotes and build the argument list.
152 for (p = str, start = t = buffer;; ++p) {
160 /* Don't miss "" or '' */
178 * end of a token -- make sure there's enough argv
179 * space and save off a pointer.
185 if (argc == argmax) {
186 argmax *= 2; /* ramp up fast */
187 argv = erealloc(argv,
188 (argmax + 1) * sizeof(char *));
190 argv[argc++] = start;
192 if (ch == '\n' || ch == '\0')
207 /* hmmm; fix it up as best we can */
237 done: argv[argc] = NULL;
245 * See if a particular string matches a particular pattern.
247 * Results: Non-zero is returned if string matches pattern, 0 otherwise. The
248 * matching operation permits the following special characters in the
249 * pattern: *?\[] (see the man page for details on what these mean).
251 * Side effects: None.
254 Str_Match(const char *string, const char *pattern)
260 * See if we're at the end of both the pattern and the
261 * string. If, we succeeded. If we're at the end of the
262 * pattern but not at the end of the string, we failed.
266 if (*string == 0 && *pattern != '*')
269 * Check for a "*" as the next pattern character. It matches
270 * any substring. We handle this by calling ourselves
271 * recursively for each postfix of string, until either we
272 * match or we reach the end of the string.
274 if (*pattern == '*') {
278 while (*string != 0) {
279 if (Str_Match(string, pattern))
286 * Check for a "?" as the next pattern character. It matches
287 * any single character.
292 * Check for a "[" as the next pattern character. It is
293 * followed by a list of characters that are acceptable, or
294 * by a range (two characters separated by "-").
296 if (*pattern == '[') {
299 if ((*pattern == ']') || (*pattern == 0))
301 if (*pattern == *string)
303 if (pattern[1] == '-') {
307 if ((*pattern <= *string) &&
310 if ((*pattern >= *string) &&
317 while ((*pattern != ']') && (*pattern != 0))
322 * If the next pattern character is '/', just strip off the
323 * '/' so we do exact matching on the character that follows.
325 if (*pattern == '\\') {
331 * There's no special character. Just make sure that the
332 * next characters of each string match.
334 if (*pattern != *string)
336 thisCharOK: ++pattern;
343 *-----------------------------------------------------------------------
345 * Check word against pattern for a match (% is wild),
348 * Returns the beginning position of a match or null. The number
349 * of characters matched is returned in len.
354 *-----------------------------------------------------------------------
357 Str_SYSVMatch(const char *word, const char *pattern, int *len)
359 const char *p = pattern;
360 const char *w = word;
364 /* Zero-length word cannot be matched against */
370 /* Null pattern is the whole string */
375 if ((m = strchr(p, '%')) != NULL) {
376 /* check that the prefix matches */
377 for (; p != m && *w && *w == *p; w++, p++)
381 return (NULL); /* No match */
384 /* No more pattern, return the rest of the string */
392 /* Find a matching tail */
394 if (strcmp(p, w) == 0) {
398 while (*w++ != '\0');
405 *-----------------------------------------------------------------------
407 * Substitute '%' on the pattern with len characters from src.
408 * If the pattern does not contain a '%' prepend len characters
415 * Places result on buf
417 *-----------------------------------------------------------------------
420 Str_SYSVSubst(Buffer buf, const char *pat, const char *src, int len)
424 if ((m = strchr(pat, '%')) != NULL) {
425 /* Copy the prefix */
426 Buf_AddBytes(buf, m - pat, (Byte *)pat);
431 /* Copy the pattern */
432 Buf_AddBytes(buf, len, (Byte *)src);
434 /* append the rest */
435 Buf_AddBytes(buf, strlen(pat), (Byte *)pat);