2 * gstr.c: String Utility Functions.
5 * Miguel de Icaza (miguel@novell.com)
6 * Aaron Bockover (abockover@novell.com)
8 * (C) 2006 Novell, Inc.
10 * Permission is hereby granted, free of charge, to any person obtaining
11 * a copy of this software and associated documentation files (the
12 * "Software"), to deal in the Software without restriction, including
13 * without limitation the rights to use, copy, modify, merge, publish,
14 * distribute, sublicense, and/or sell copies of the Software, and to
15 * permit persons to whom the Software is furnished to do so, subject to
16 * the following conditions:
18 * The above copyright notice and this permission notice shall be
19 * included in all copies or substantial portions of the Software.
21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
25 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
26 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
27 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
35 /* This is not a macro, because I dont want to put _GNU_SOURCE in the glib.h header */
37 g_strndup (const gchar *str, gsize n)
40 return strndup (str, n);
43 char *retval = g_malloc(n+1);
45 strncpy(retval, str, n)[n] = 0;
54 g_strfreev (gchar **str_array)
56 gchar **orig = str_array;
57 if (str_array == NULL)
59 while (*str_array != NULL){
67 g_strdupv (gchar **str_array)
76 length = g_strv_length(str_array);
77 ret = g_new0(gchar *, length + 1);
78 for (i = 0; str_array[i]; i++) {
79 ret[i] = g_strdup(str_array[i]);
86 g_strv_length(gchar **str_array)
89 g_return_val_if_fail(str_array != NULL, 0);
90 for(length = 0; str_array[length] != NULL; length++);
95 g_str_has_suffix(const gchar *str, const gchar *suffix)
100 g_return_val_if_fail(str != NULL, FALSE);
101 g_return_val_if_fail(suffix != NULL, FALSE);
103 str_length = strlen(str);
104 suffix_length = strlen(suffix);
106 return suffix_length <= str_length ?
107 strncmp(str + str_length - suffix_length, suffix, suffix_length) == 0 :
112 g_str_has_prefix(const gchar *str, const gchar *prefix)
115 size_t prefix_length;
117 g_return_val_if_fail(str != NULL, FALSE);
118 g_return_val_if_fail(prefix != NULL, FALSE);
120 str_length = strlen(str);
121 prefix_length = strlen(prefix);
123 return prefix_length <= str_length ?
124 strncmp(str, prefix, prefix_length) == 0 :
129 g_strdup_vprintf (const gchar *format, va_list args)
134 n = vasprintf (&ret, format, args);
142 g_strdup_printf (const gchar *format, ...)
148 va_start (args, format);
149 n = vasprintf (&ret, format, args);
158 g_strerror (gint errnum)
160 return strerror (errnum);
164 g_strconcat (const gchar *first, ...)
169 g_return_val_if_fail (first != NULL, NULL);
171 total += strlen (first);
172 va_start (args, first);
173 for (s = va_arg (args, char *); s != NULL; s = va_arg(args, char *)){
178 ret = g_malloc (total + 1);
184 va_start (args, first);
185 for (s = va_arg (args, char *); s != NULL; s = va_arg(args, char *)){
194 add_to_vector (gchar ***vector, int size, gchar *token)
196 *vector = *vector == NULL ?
197 (gchar **)g_malloc(2 * sizeof(*vector)) :
198 (gchar **)g_realloc(*vector, (size + 1) * sizeof(*vector));
200 (*vector)[size - 1] = token;
204 g_strsplit (const gchar *string, const gchar *delimiter, gint max_tokens)
207 gchar *token, **vector;
210 g_return_val_if_fail (string != NULL, NULL);
211 g_return_val_if_fail (delimiter != NULL, NULL);
212 g_return_val_if_fail (delimiter[0] != 0, NULL);
214 if (strncmp (string, delimiter, strlen (delimiter)) == 0) {
215 vector = (gchar **)g_malloc (2 * sizeof(vector));
216 vector[0] = g_strdup ("");
218 string += strlen (delimiter);
223 while (*string && !(max_tokens > 0 && size >= max_tokens)) {
225 if (strncmp (string, delimiter, strlen (delimiter)) == 0) {
226 token = g_strdup ("");
227 string += strlen (delimiter);
229 while (*string && strncmp (string, delimiter, strlen (delimiter)) != 0) {
234 gsize toklen = (string - c);
235 token = g_strndup (c, toklen);
237 /* Need to leave a trailing empty
238 * token if the delimiter is the last
241 if (strcmp (string, delimiter) != 0) {
242 string += strlen (delimiter);
245 token = g_strdup (c);
249 add_to_vector (&vector, size, token);
254 /* Add the rest of the string as the last element */
255 add_to_vector (&vector, size, g_strdup (string));
259 if (vector == NULL) {
260 vector = (gchar **) g_malloc (2 * sizeof (vector));
262 } else if (size > 0) {
263 vector[size - 1] = NULL;
270 charcmp (gchar testchar, const gchar *compare)
273 if (*compare == testchar) {
283 g_strsplit_set (const gchar *string, const gchar *delimiter, gint max_tokens)
286 gchar *token, **vector;
289 g_return_val_if_fail (string != NULL, NULL);
290 g_return_val_if_fail (delimiter != NULL, NULL);
291 g_return_val_if_fail (delimiter[0] != 0, NULL);
293 if (charcmp (*string, delimiter)) {
294 vector = (gchar **)g_malloc (2 * sizeof(vector));
295 vector[0] = g_strdup ("");
303 while (*string && !(max_tokens > 0 && size >= max_tokens)) {
304 if (charcmp (*string, delimiter)) {
305 gsize toklen = (string - c);
307 token = g_strdup ("");
309 token = g_strndup (c, toklen);
314 add_to_vector (&vector, size, token);
321 if (max_tokens > 0 && size >= max_tokens) {
323 /* Add the rest of the string as the last element */
324 add_to_vector (&vector, size, g_strdup (string));
329 /* Fill in the trailing last token */
330 add_to_vector (&vector, size, g_strdup (c));
333 /* Need to leave a trailing empty token if the
334 * delimiter is the last part of the string
336 add_to_vector (&vector, size, g_strdup (""));
341 if (vector == NULL) {
342 vector = (gchar **) g_malloc (2 * sizeof (vector));
344 } else if (size > 0) {
345 vector[size - 1] = NULL;
352 g_strreverse (gchar *str)
363 for (i = 0, j = strlen (str) - 1; i < j; i++, j--) {
373 g_strjoin (const gchar *separator, ...)
379 if (separator != NULL)
380 slen = strlen (separator);
385 va_start (args, separator);
386 for (s = va_arg (args, char *); s != NULL; s = va_arg (args, char *)){
393 return g_strdup ("");
395 /* Remove the last separator */
396 if (slen > 0 && len > 0)
399 res = g_malloc (len + 1);
400 va_start (args, separator);
401 s = va_arg (args, char *);
402 r = g_stpcpy (res, s);
403 for (s = va_arg (args, char *); s != NULL; s = va_arg (args, char *)){
404 if (separator != NULL)
405 r = g_stpcpy (r, separator);
414 g_strjoinv (const gchar *separator, gchar **str_array)
419 if (separator != NULL)
420 slen = strlen (separator);
425 for (i = 0; str_array [i] != NULL; i++){
426 len += strlen (str_array [i]);
431 return g_strdup ("");
433 if (slen > 0 && len > 0)
436 res = g_malloc (len + 1);
437 r = g_stpcpy (res, str_array [0]);
438 for (i = 1; str_array [i] != NULL; i++){
439 if (separator != NULL)
440 r = g_stpcpy (r, separator);
441 r = g_stpcpy (r, str_array [i]);
448 g_strchug (gchar *str)
457 while (*tmp && isspace (*tmp)) tmp++;
459 len = strlen (str) - (tmp - str - 1);
460 memmove (str, tmp, len);
466 g_strchomp (gchar *str)
473 tmp = str + strlen (str) - 1;
474 while (*tmp && isspace (*tmp)) tmp--;
480 g_printf(gchar const *format, ...)
485 va_start(args, format);
486 ret = vprintf(format, args);
493 g_fprintf(FILE *file, gchar const *format, ...)
498 va_start(args, format);
499 ret = vfprintf(file, format, args);
506 g_sprintf(gchar *string, gchar const *format, ...)
511 va_start(args, format);
512 ret = vsprintf(string, format, args);
519 g_snprintf(gchar *string, gulong n, gchar const *format, ...)
524 va_start(args, format);
525 ret = vsnprintf(string, n, format, args);
531 static const char hx [] = { '0', '1', '2', '3', '4', '5', '6', '7',
532 '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
535 char_needs_encoding (char c)
537 if (((unsigned char)c) >= 0x80)
540 if ((c >= '@' && c <= 'Z') ||
541 (c >= 'a' && c <= 'z') ||
542 (c >= '&' && c < 0x3b) ||
543 (c == '!') || (c == '$') || (c == '_') || (c == '=') || (c == '~'))
549 g_filename_to_uri (const gchar *filename, const gchar *hostname, GError **error)
555 const char *uriPrefix = "file:///";
557 const char *uriPrefix = "file://";
560 g_return_val_if_fail (filename != NULL, NULL);
562 if (hostname != NULL)
563 g_warning ("%s", "eglib: g_filename_to_uri: hostname not handled");
565 if (!g_path_is_absolute (filename)){
567 *error = g_error_new (NULL, 2, "Not an absolute filename");
572 n = strlen (uriPrefix) + 1;
573 for (p = filename; *p; p++){
580 if (char_needs_encoding (*p))
586 strcpy (ret, uriPrefix);
587 for (p = filename, rp = ret + strlen (ret); *p; p++){
594 if (char_needs_encoding (*p)){
596 *rp++ = hx [((unsigned char)(*p)) >> 4];
597 *rp++ = hx [((unsigned char)(*p)) & 0xf];
608 if (p >= '0' && p <= '9')
610 if (p >= 'A' && p <= 'F')
612 if (p >= 'a' && p <= 'f')
614 g_assert_not_reached ();
619 g_filename_from_uri (const gchar *uri, gchar **hostname, GError **error)
625 g_return_val_if_fail (uri != NULL, NULL);
627 if (hostname != NULL)
628 g_warning ("%s", "eglib: g_filename_from_uri: hostname not handled");
630 if (strncmp (uri, "file:///", 8) != 0){
632 *error = g_error_new (NULL, 2, "URI does not start with the file: scheme");
636 for (p = uri + 8; *p; p++){
638 if (p [1] && p [2] && isxdigit (p [1]) && isxdigit (p [2])){
642 *error = g_error_new (NULL, 2, "URI contains an invalid escape sequence");
652 result = g_malloc (flen + 1);
662 for (p = uri + 8; *p; p++){
664 *r++ = (char)((decode (p [1]) << 4) | decode (p [2]));
674 g_strdown (gchar *string)
676 g_return_if_fail (string != NULL);
679 *string = (gchar)tolower (*string);
685 g_ascii_tolower (gchar c)
687 return c >= 'A' && c <= 'Z' ? c + ('a' - 'A') : c;
691 g_ascii_strdown (const gchar *str, gssize len)
696 g_return_val_if_fail (str != NULL, NULL);
701 ret = g_malloc (len + 1);
702 for (i = 0; i < len; i++)
703 ret [i] = (guchar) g_ascii_tolower (str [i]);
710 g_ascii_toupper (gchar c)
712 return c >= 'a' && c <= 'z' ? c + ('A' - 'a') : c;
716 g_ascii_strup (const gchar *str, gssize len)
721 g_return_val_if_fail (str != NULL, NULL);
726 ret = g_malloc (len + 1);
727 for (i = 0; i < len; i++)
728 ret [i] = (guchar) g_ascii_toupper (str [i]);
735 g_ascii_strncasecmp (const gchar *s1, const gchar *s2, gsize n)
739 g_return_val_if_fail (s1 != NULL, 0);
740 g_return_val_if_fail (s2 != NULL, 0);
742 for (i = 0; i < n; i++) {
743 gchar c1 = g_ascii_tolower (*s1++);
744 gchar c2 = g_ascii_tolower (*s2++);
754 g_ascii_strcasecmp (const gchar *s1, const gchar *s2)
756 const char *sp1 = s1;
757 const char *sp2 = s2;
759 g_return_val_if_fail (s1 != NULL, 0);
760 g_return_val_if_fail (s2 != NULL, 0);
762 while (*sp1 != '\0') {
763 char c1 = g_ascii_tolower (*sp1++);
764 char c2 = g_ascii_tolower (*sp2++);
770 return (*sp1) - (*sp2);
774 g_strdelimit (gchar *string, const gchar *delimiters, gchar new_delimiter)
778 g_return_val_if_fail (string != NULL, NULL);
780 if (delimiters == NULL)
781 delimiters = G_STR_DELIMITERS;
783 for (ptr = string; *ptr; ptr++) {
784 if (strchr (delimiters, *ptr))
785 *ptr = new_delimiter;
792 g_strlcpy (gchar *dest, const gchar *src, gsize dest_size)
795 return strlcpy (dest, src, dest_size);
802 g_return_val_if_fail (src != NULL, 0);
803 g_return_val_if_fail (dest != NULL, 0);
815 return (dest_size - len - 1);
818 /* len is 0 i we get here */
820 /* we need to return the length of src here */
821 while (*s++) ; /* instead of a plain strlen, we use 's' */
827 g_stpcpy (gchar *dest, const char *src)
829 g_return_val_if_fail (dest != NULL, dest);
830 g_return_val_if_fail (src != NULL, dest);
833 return stpcpy (dest, src);
844 static const gchar escaped_dflt [256] = {
845 1, 1, 1, 1, 1, 1, 1, 1, 'b', 't', 'n', 1, 'f', 'r', 1, 1,
846 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
847 0, 0, '"', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
848 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
849 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
850 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, '\\', 0, 0, 0,
851 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
852 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
853 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
854 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
855 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
856 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
857 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
858 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
859 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
860 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
864 g_strescape (const gchar *source, const gchar *exceptions)
873 g_return_val_if_fail (source != NULL, NULL);
875 memcpy (escaped, escaped_dflt, 256);
876 if (exceptions != NULL) {
877 for (ptr = exceptions; *ptr; ptr++)
878 escaped [(int) *ptr] = 0;
880 result = g_malloc (strlen (source) * 4 + 1); /* Worst case: everything octal. */
882 for (ptr = source; *ptr; ptr++) {
884 op = escaped [(int) c];
892 *res_ptr++ = '0' + ((c >> 6) & 3);
893 *res_ptr++ = '0' + ((c >> 3) & 7);
894 *res_ptr++ = '0' + (c & 7);
903 g_ascii_xdigit_value (gchar c)
905 return ((isxdigit (c) == 0) ? -1 :
906 ((c >= '0' && c <= '9') ? (c - '0') :
907 ((c >= 'a' && c <= 'f') ? (c - 'a' + 10) :
912 g_strnfill (gsize length, gchar fill_char)
914 gchar *ret = g_new (gchar, length + 1);
916 memset (ret, fill_char, length);