diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/Makefile | 4 | ||||
| -rw-r--r-- | src/feh.h | 5 | ||||
| -rw-r--r-- | src/filelist.c | 4 | ||||
| -rw-r--r-- | src/options.c | 4 | ||||
| -rw-r--r-- | src/strverscmp.c | 57 |
5 files changed, 65 insertions, 9 deletions
diff --git a/src/Makefile b/src/Makefile index ac4d2fe..10e33eb 100644 --- a/src/Makefile +++ b/src/Makefile @@ -34,6 +34,10 @@ ifeq (${exif},1) exif_nikon.c endif +ifneq (${verscmp},1) + TARGETS += strverscmp.c +endif + OBJECTS = ${TARGETS:.c=.o} I_SRCS = ${shell echo *.raw} @@ -31,7 +31,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * strverscmp(3) is a GNU extension. In most supporting C libraries it * requires _GNU_SOURCE to be defined. */ -#ifdef HAVE_VERSCMP +#ifdef HAVE_STRVERSCMP #define _GNU_SOURCE #endif @@ -182,6 +182,9 @@ gib_list *feh_list_jump(gib_list * root, gib_list * l, int direction, int num); #ifdef HAVE_INOTIFY void feh_event_handle_inotify(void); #endif +#ifndef HAVE_STRVERSCMP +int strverscmp(const char *l0, const char *r0); +#endif /* Imlib stuff */ extern Display *disp; diff --git a/src/filelist.c b/src/filelist.c index 4939d4d..361ac19 100644 --- a/src/filelist.c +++ b/src/filelist.c @@ -402,7 +402,6 @@ void feh_file_dirname(char *dst, feh_file * f, int maxlen) dst[n] = '\0'; } -#ifdef HAVE_VERSCMP static inline int strcmp_or_strverscmp(const char *s1, const char *s2) { if (!opt.version_sort) @@ -410,9 +409,6 @@ static inline int strcmp_or_strverscmp(const char *s1, const char *s2) else return(strverscmp(s1, s2)); } -#else -#define strcmp_or_strverscmp strcmp -#endif int feh_cmp_filename(void *file1, void *file2) { diff --git a/src/options.c b/src/options.c index 2cd7a9e..a92b1ff 100644 --- a/src/options.c +++ b/src/options.c @@ -943,10 +943,6 @@ static void show_version(void) "stat64 " #endif -#ifdef HAVE_VERSCMP - "verscmp " -#endif - #ifdef HAVE_LIBXINERAMA "xinerama " #endif diff --git a/src/strverscmp.c b/src/strverscmp.c new file mode 100644 index 0000000..92cd877 --- /dev/null +++ b/src/strverscmp.c @@ -0,0 +1,57 @@ +/* + * Copyright © 2005-2020 Rich Felker, et al. + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#define _GNU_SOURCE +#include <ctype.h> +#include <string.h> + +int strverscmp(const char *l0, const char *r0) +{ + const unsigned char *l = (const void *)l0; + const unsigned char *r = (const void *)r0; + size_t i, dp, j; + int z = 1; + + /* Find maximal matching prefix and track its maximal digit + * suffix and whether those digits are all zeros. */ + for (dp=i=0; l[i]==r[i]; i++) { + int c = l[i]; + if (!c) return 0; + if (!isdigit(c)) dp=i+1, z=1; + else if (c!='0') z=0; + } + + if (l[dp]!='0' && r[dp]!='0') { + /* If we're not looking at a digit sequence that began + * with a zero, longest digit string is greater. */ + for (j=i; isdigit(l[j]); j++) + if (!isdigit(r[j])) return 1; + if (isdigit(r[j])) return -1; + } else if (z && dp<i && (isdigit(l[i]) || isdigit(r[i]))) { + /* Otherwise, if common prefix of digit sequence is + * all zeros, digits order less than non-digits. */ + return (unsigned char)(l[i]-'0') - (unsigned char)(r[i]-'0'); + } + + return l[i] - r[i]; +} |