/* * Copyright (c) 2003-2007 by FlashCode * See README for License detail, AUTHORS for developers list. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ /* wee-string.c: string functions for WeeChat */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include #include #ifdef HAVE_ICONV #include #endif #ifndef ICONV_CONST #ifdef ICONV_2ARG_IS_CONST #define ICONV_CONST const #else #define ICONV_CONST #endif #endif #include "weechat.h" #include "wee-string.h" #include "wee-utf8.h" /* * strndup: define strndup function if not existing (FreeBSD and maybe other) */ #ifndef HAVE_STRNDUP char * strndup (char *string, int length) { char *result; if ((int)strlen (string) < length) return strdup (string); result = (char *)malloc (length + 1); if (!result) return NULL; memcpy (result, string, length); result[length] = '\0'; return result; } #endif /* * string_tolower: locale independant string conversion to lower case */ void string_tolower (char *string) { while (string && string[0]) { if ((string[0] >= 'A') && (string[0] <= 'Z')) string[0] += ('a' - 'A'); string = utf8_next_char (string); } } /* * string_toupper: locale independant string conversion to upper case */ void string_toupper (char *string) { while (string && string[0]) { if ((string[0] >= 'a') && (string[0] <= 'z')) string[0] -= ('a' - 'A'); string = utf8_next_char (string); } } /* * string_strcasecmp: locale and case independent string comparison */ int string_strcasecmp (char *string1, char *string2) { int diff; if (!string1 || !string2) return (string1) ? 1 : ((string2) ? -1 : 0); while (string1[0] && string2[0]) { diff = utf8_charcasecmp (string1, string2); if (diff != 0) return diff; string1 = utf8_next_char (string1); string2 = utf8_next_char (string2); } return (string1[0]) ? 1 : ((string2[0]) ? -1 : 0); } /* * string_strncasecmp: locale and case independent string comparison * with max length */ int string_strncasecmp (char *string1, char *string2, int max) { int count, diff; if (!string1 || !string2) return (string1) ? 1 : ((string2) ? -1 : 0); count = 0; while ((count < max) && string1[0] && string2[0]) { diff = utf8_charcasecmp (string1, string2); if (diff != 0) return diff; string1 = utf8_next_char (string1); string2 = utf8_next_char (string2); count++; } if (count >= max) return 0; else return (string1[0]) ? 1 : ((string2[0]) ? -1 : 0); } /* * string_strcasestr: locale and case independent string search */ char * string_strcasestr (char *string, char *search) { int length_search; length_search = strlen (search); if (!string || !search || (length_search == 0)) return NULL; while (string[0]) { if (string_strncasecmp (string, search, length_search) == 0) return string; string++; } return NULL; } /* * string_replace: replace a string by new one in a string * note: returned value has to be free() after use */ char * string_replace (char *string, char *search, char *replace) { char *pos, *new_string; int length1, length2, length_new, count; if (!string || !search || !replace) return NULL; length1 = strlen (search); length2 = strlen (replace); /* count number of strings to replace */ count = 0; pos = string; while (pos && pos[0] && (pos = strstr (pos, search))) { count++; pos += length1; } /* easy: no string to replace! */ if (count == 0) return strdup (string); /* compute needed memory for new string */ length_new = strlen (string) - (count * length1) + (count * length2) + 1; /* allocate new string */ new_string = (char *)malloc (length_new * sizeof (char)); if (!new_string) return strdup (string); /* replace all occurences */ new_string[0] = '\0'; while (string && string[0]) { pos = strstr (string, search); if (pos) { strncat (new_string, string, pos - string); strcat (new_string, replace); pos += length1; } else strcat (new_string, string); string = pos; } return new_string; } /* * string_remove_quotes: remove quotes at beginning/end of string * (ignore spaces if there are before first quote or * after last quote) * note: returned value has to be free() after use */ char * string_remove_quotes (char *string, char *quotes) { int length; char *pos_start, *pos_end; if (!string || !quotes) return NULL; if (!string[0]) return strdup (string); pos_start = string; while (pos_start[0] == ' ') { pos_start++; } length = strlen (string); pos_end = string + length - 1; while ((pos_end[0] == ' ') && (pos_end > pos_start)) { pos_end--; } if (!pos_start[0] || !pos_end[0] || (pos_end <= pos_start)) return strdup (string); if (strchr (quotes, pos_start[0]) && (pos_end[0] == pos_start[0])) { if (pos_end == (pos_start + 1)) return strdup (""); return strndup (pos_start + 1, pos_end - pos_start - 1); } return strdup (string); } /* * string_convert_hex_chars: convert hex chars (\x??) to value */ char * string_convert_hex_chars (char *string) { char *output, hex_str[8], *error; int pos_output; long number; output = (char *)malloc (strlen (string) + 1); if (output) { pos_output = 0; while (string && string[0]) { if (string[0] == '\\') { string++; switch (string[0]) { case '\\': output[pos_output++] = '\\'; string++; break; case 'x': case 'X': if (isxdigit (string[1]) && isxdigit (string[2])) { snprintf (hex_str, sizeof (hex_str), "0x%c%c", string[1], string[2]); number = strtol (hex_str, &error, 16); if (error && (error[0] == '\0')) { output[pos_output++] = number; string += 3; } else { output[pos_output++] = '\\'; output[pos_output++] = string[0]; string++; } } else { output[pos_output++] = string[0]; string++; } break; default: output[pos_output++] = '\\'; output[pos_output++] = string[0]; string++; break; } } else { output[pos_output++] = string[0]; string++; } } output[pos_output] = '\0'; } return output; } /* * string_explode: explode a string according to separators * examples: * string_explode ("abc de fghi", " ", 0, 0, NULL) * ==> array[0] = "abc" * array[1] = "de" * array[2] = "fghi" * array[3] = NULL * string_explode ("abc de fghi", " ", 1, 0, NULL) * ==> array[0] = "abc de fghi" * array[1] = "de fghi" * array[2] = "fghi" * array[3] = NULL */ char ** string_explode (char *string, char *separators, int keep_eol, int num_items_max, int *num_items) { int i, n_items; char **array; char *ptr, *ptr1, *ptr2; if (num_items != NULL) *num_items = 0; if (!string || !string[0]) return NULL; /* calculate number of items */ ptr = string; i = 1; while ((ptr = strpbrk (ptr, separators))) { while (strchr (separators, ptr[0]) != NULL) ptr++; i++; } n_items = i; if ((num_items_max != 0) && (n_items > num_items_max)) n_items = num_items_max; array = (char **) malloc ((n_items + 1) * sizeof (char *)); ptr1 = string; ptr2 = string; for (i = 0; i < n_items; i++) { while (strchr (separators, ptr1[0]) != NULL) ptr1++; if (i == (n_items - 1) || (ptr2 = strpbrk (ptr1, separators)) == NULL) if ((ptr2 = strchr (ptr1, '\r')) == NULL) if ((ptr2 = strchr (ptr1, '\n')) == NULL) ptr2 = strchr (ptr1, '\0'); if ((ptr1 == NULL) || (ptr2 == NULL)) { array[i] = NULL; } else { if (ptr2 - ptr1 > 0) { if (keep_eol) array[i] = strdup (ptr1); else { array[i] = (char *) malloc ((ptr2 - ptr1 + 1) * sizeof (char)); array[i] = strncpy (array[i], ptr1, ptr2 - ptr1); array[i][ptr2 - ptr1] = '\0'; } ptr1 = ++ptr2; } else { array[i] = NULL; } } } array[i] = NULL; if (num_items != NULL) *num_items = i; return array; } /* * string_free_exploded: free an exploded string */ void string_free_exploded (char **exploded_string) { int i; if (exploded_string) { for (i = 0; exploded_string[i]; i++) free (exploded_string[i]); free (exploded_string); } } /* * string_split_multi_command: split a list of commands separated by 'sep' * and ecscaped with '\' * - empty commands are removed * - spaces on the left of each commands are stripped * Result must be freed with free_multi_command */ char ** string_split_multi_command (char *command, char sep) { int nb_substr, arr_idx, str_idx, type; char **array; char *buffer, *ptr, *p; if (command == NULL) return NULL; nb_substr = 1; ptr = command; while ( (p = strchr(ptr, sep)) != NULL) { nb_substr++; ptr = ++p; } array = (char **) malloc ((nb_substr + 1) * sizeof(char *)); if (!array) return NULL; buffer = (char *) malloc ( (strlen(command) + 1) * sizeof (char)); if (!buffer) { free (array); return NULL; } ptr = command; str_idx = 0; arr_idx = 0; while(*ptr != '\0') { type = 0; if (*ptr == ';') { if (ptr == command) type = 1; else if ( *(ptr-1) != '\\') type = 1; else if ( *(ptr-1) == '\\') type = 2; } if (type == 1) { buffer[str_idx] = '\0'; str_idx = -1; p = buffer; /* strip white spaces a the begining of the line */ while (*p == ' ') p++; if (p && p[0]) array[arr_idx++] = strdup (p); } else if (type == 2) buffer[--str_idx] = *ptr; else buffer[str_idx] = *ptr; str_idx++; ptr++; } buffer[str_idx] = '\0'; p = buffer; while (*p == ' ') p++; if (p && p[0]) array[arr_idx++] = strdup (p); array[arr_idx] = NULL; free (buffer); array = (char **) realloc (array, (arr_idx + 1) * sizeof(char *)); return array; } /* * string_free_multi_command : free a list of commands splitted * with split_multi_command */ void string_free_multi_command (char **commands) { int i; if (commands) { for (i = 0; commands[i]; i++) free (commands[i]); free (commands); } } /* * string_iconv: convert string to another charset */ char * string_iconv (int from_utf8, char *from_code, char *to_code, char *string) { char *outbuf; #ifdef HAVE_ICONV iconv_t cd; char *inbuf, *ptr_inbuf, *ptr_outbuf, *next_char; char *ptr_inbuf_shift; int done; size_t err, inbytesleft, outbytesleft; if (from_code && from_code[0] && to_code && to_code[0] && (string_strcasecmp(from_code, to_code) != 0)) { cd = iconv_open (to_code, from_code); if (cd == (iconv_t)(-1)) outbuf = strdup (string); else { inbuf = strdup (string); ptr_inbuf = inbuf; inbytesleft = strlen (inbuf); outbytesleft = inbytesleft * 4; outbuf = (char *) malloc (outbytesleft + 2); ptr_outbuf = outbuf; ptr_inbuf_shift = NULL; done = 0; while (!done) { err = iconv (cd, (ICONV_CONST char **)(&ptr_inbuf), &inbytesleft, &ptr_outbuf, &outbytesleft); if (err == (size_t)(-1)) { switch (errno) { case EINVAL: done = 1; break; case E2BIG: done = 1; break; case EILSEQ: if (from_utf8) { next_char = utf8_next_char (ptr_inbuf); if (next_char) { inbytesleft -= next_char - ptr_inbuf; ptr_inbuf = next_char; } else { inbytesleft--; ptr_inbuf++; } } else { ptr_inbuf++; inbytesleft--; } ptr_outbuf[0] = '?'; ptr_outbuf++; outbytesleft--; break; } } else { if (!ptr_inbuf_shift) { ptr_inbuf_shift = ptr_inbuf; ptr_inbuf = NULL; inbytesleft = 0; } else done = 1; } } if (ptr_inbuf_shift) ptr_inbuf = ptr_inbuf_shift; ptr_outbuf[0] = '\0'; free (inbuf); iconv_close (cd); } } else outbuf = strdup (string); #else /* make C compiler happy */ (void) from_utf8; (void) from_code; (void) to_code; outbuf = strdup (string); #endif /* HAVE_ICONV */ return outbuf; } /* * string_iconv_to_internal: convert user string (input, script, ..) to * WeeChat internal storage charset */ char * string_iconv_to_internal (char *charset, char *string) { char *input, *output; input = strdup (string); /* optimize for UTF-8: if charset is NULL => we use term charset => if ths charset is already UTF-8, then no iconv needed */ if (local_utf8 && (!charset || !charset[0])) return input; if (input) { if (utf8_has_8bits (input) && utf8_is_valid (input, NULL)) return input; output = string_iconv (0, (charset && charset[0]) ? charset : local_charset, WEECHAT_INTERNAL_CHARSET, input); utf8_normalize (output, '?'); free (input); return output; } return NULL; } /* * string_iconv_from_internal: convert internal string to terminal charset, * for display */ char * string_iconv_from_internal (char *charset, char *string) { char *input, *output; input = strdup (string); /* optimize for UTF-8: if charset is NULL => we use term charset => if ths charset is already UTF-8, then no iconv needed */ if (local_utf8 && (!charset || !charset[0])) return input; if (input) { utf8_normalize (input, '?'); output = string_iconv (1, WEECHAT_INTERNAL_CHARSET, (charset && charset[0]) ? charset : local_charset, input); free (input); return output; } return NULL; } /* * string_iconv_fprintf: encode to terminal charset, then call fprintf on a file */ void string_iconv_fprintf (FILE *file, char *data, ...) { va_list argptr; static char buf[4096]; char *buf2; va_start (argptr, data); vsnprintf (buf, sizeof (buf) - 1, data, argptr); va_end (argptr); buf2 = string_iconv_from_internal (NULL, buf); fprintf (file, "%s", (buf2) ? buf2 : buf); if (buf2) free (buf2); }