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Basic support for extended character sets.
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Roland Illig <roland.illig@gmx.de>, 2005.
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This file is part of the Midnight Commander.
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The Midnight Commander is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The Midnight Commander is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* String type conversion
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extern gboolean ecs_mbstr_to_str(ecs_char **ret_str, const char *s)
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#ifdef EXTCHARSET_ENABLED
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str = g_new(ecs_char, maxlen + 1);
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len = mbstowcs(str, s, maxlen + 1);
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if (len == (size_t) -1) {
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assert(len <= maxlen);
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*ret_str = g_renew(ecs_char, str, len + 1);
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*ret_str = g_strdup(s);
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extern gboolean ecs_str_to_mbstr(char **ret_str, const ecs_char *s)
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#ifdef EXTCHARSET_ENABLED
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maxlen = ecs_strlen(s) * MB_CUR_MAX;
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str = g_new(char, maxlen + 1);
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len = wcstombs(str, s, maxlen + 1);
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if (len == (size_t) -1) {
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assert(len <= maxlen);
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*ret_str = g_renew(char, str, len + 1);
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*ret_str = g_strdup(s);
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* Character classification
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#ifdef EXTCHARSET_ENABLED
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# define ECS_CTYPE(wf, cf, c) \
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# define ECS_CTYPE(wf, cf, c) \
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(((unsigned char) c != c) ? FALSE : (cf(c)))
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# define ECS_CTYPE(wf, cf, c) \
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extern gboolean ecs_isalnum(ecs_char c)
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return ECS_CTYPE(iswalnum, isalnum, c);
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extern gboolean ecs_isalpha(ecs_char c)
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return ECS_CTYPE(iswalpha, isalpha, c);
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extern gboolean ecs_iscntrl(ecs_char c)
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return ECS_CTYPE(iswcntrl, iscntrl, c);
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extern gboolean ecs_isdigit(ecs_char c)
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return ECS_CTYPE(iswdigit, isdigit, c);
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extern gboolean ecs_isgraph(ecs_char c)
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return ECS_CTYPE(iswgraph, isgraph, c);
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extern gboolean ecs_islower(ecs_char c)
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return ECS_CTYPE(iswlower, islower, c);
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extern gboolean ecs_isprint(ecs_char c)
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return ECS_CTYPE(iswprint, isprint, c);
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extern gboolean ecs_ispunct(ecs_char c)
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return ECS_CTYPE(iswpunct, ispunct, c);
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extern gboolean ecs_isspace(ecs_char c)
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return ECS_CTYPE(iswspace, isspace, c);
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extern gboolean ecs_isupper(ecs_char c)
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return ECS_CTYPE(iswupper, isupper, c);
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extern gboolean ecs_isxdigit(ecs_char c)
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return ECS_CTYPE(iswxdigit, isxdigit, c);
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* ISO C90 <string.h> functions
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/* left out: ecs_strcpy */
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/* left out: ecs_strncpy */
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/* left out: ecs_strcat */
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/* left out: ecs_strncat */
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ecs_strcmp(const ecs_char *a, const ecs_char *b)
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unsigned long ca, cb;
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for (i = 0; a[i] == b[i]; i++) {
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if (a[i] == ECS_CHAR('\0'))
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ca = (unsigned long) a[i];
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cb = (unsigned long) b[i];
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return (ca < cb) ? -1 : (ca > cb) ? 1 : 0;
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/* left out: ecs_strcoll */
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/* left out: ecs_strncmp */
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/* left out: ecs_strxfrm */
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ecs_strchr(const ecs_char *s, ecs_char c)
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for (i = 0; s[i] != c; i++) {
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if (s[i] == ECS_CHAR('\0'))
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return (ecs_char *) s + i;
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ecs_strcspn(const ecs_char *haystack, const ecs_char *needles)
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for (i = 0; haystack[i] != ECS_CHAR('\0'); i++) {
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for (j = 0; needles[j] != ECS_CHAR('\0'); j++) {
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if (haystack[i] == needles[j])
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/* left out: ecs_strpbrk */
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ecs_strrchr(const ecs_char *s, ecs_char c)
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for (i = 0, pos = NULL;; i++) {
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pos = (ecs_char *) s + i;
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if (s[i] == ECS_CHAR('\0'))
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ecs_strspn(const ecs_char *s, const ecs_char *chars)
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for (i = 0; s[i] != ECS_CHAR('\0'); i++) {
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if (ecs_strchr(chars, s[i]) == NULL)
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ecs_strstr(const ecs_char *s, const ecs_char *sub)
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for (i = 0; s[i] != ECS_CHAR('\0'); i++) {
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for (j = 0; sub[j] != ECS_CHAR('\0'); j++) {
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if (s[i + j] != sub[j])
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return (ecs_char *) s + i;
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/* left out: ecs_strtok */
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ecs_strlen(const ecs_char *s)
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for (i = 0; s[i] != ECS_CHAR('\0'); i++)
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ecs_char *ecs_xstrdup(const ecs_char *s)
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retval = g_new(ecs_char, len + 1);
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memcpy(retval, s, (len + 1) * sizeof(ecs_char));
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ecs_strlcpy(ecs_char *dst, const ecs_char *src, size_t dstsize)
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size_t n = 0; /* number of copied characters */
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while (n < dstsize - 1 && *src != ECS_CHAR('\0')) {
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*dst = ECS_CHAR('\0');
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while (*src != ECS_CHAR('\0')) {
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ecs_strlcat(ecs_char *dst, const ecs_char *src, size_t dstsize)
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while (di < dstsize && dst[di] != ECS_CHAR('\0'))
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return di + ecs_strlcpy(dst + di, src, dstsize - di);
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ecs_strbox(const ecs_char *s, size_t *ret_width, size_t *ret_height)
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size_t nlines = 0, ncolumns = 0, colindex = 0, i;
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for (i = 0; s[i] != ECS_CHAR('\0'); i++) {
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if (s[i] == ECS_CHAR('\n')) {
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if (!ecs_isprint(s[i]))
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/* FIXME: This code assumes that each printable
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* character occupies one cell on the screen. */
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if (colindex > ncolumns)
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*ret_width = ncolumns;
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*ret_height = nlines;