diff options
Diffstat (limited to 'opkg-compare-versions.c')
| -rw-r--r-- | opkg-compare-versions.c | 158 |
1 files changed, 0 insertions, 158 deletions
diff --git a/opkg-compare-versions.c b/opkg-compare-versions.c deleted file mode 100644 index 62851fa..0000000 --- a/opkg-compare-versions.c +++ /dev/null @@ -1,158 +0,0 @@ -/* - * libdpkg - Debian packaging suite library routines - * vercmp.c - comparison of version numbers - * - * Copyright (C) 1995 Ian Jackson <iwj10@cus.cam.ac.uk> - * - * This 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 2, - * or (at your option) any later version. - * - * This 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 dpkg; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ -#include <stdio.h> -#include <stdlib.h> -#include <ctype.h> -#include <string.h> - -# define _(Text) Text - -struct versionrevision { - unsigned long epoch; - char *version; - const char *revision; -}; - -/* assume ascii; warning: evaluates x multiple times! */ -#define order(x) ((x) == '~' ? -1 \ - : isdigit((x)) ? 0 \ - : !(x) ? 0 \ - : isalpha((x)) ? (x) \ - : (x) + 256) - -static int -verrevcmp(const char *val, const char *ref) { - if (!val) val= ""; - if (!ref) ref= ""; - - while (*val || *ref) { - int first_diff= 0; - - while ( (*val && !isdigit(*val)) || (*ref && !isdigit(*ref)) ) { - int vc= order(*val), rc= order(*ref); - if (vc != rc) return vc - rc; - val++; ref++; - } - - while ( *val == '0' ) val++; - while ( *ref == '0' ) ref++; - while (isdigit(*val) && isdigit(*ref)) { - if (!first_diff) first_diff= *val - *ref; - val++; ref++; - } - if (isdigit(*val)) return 1; - if (isdigit(*ref)) return -1; - if (first_diff) return first_diff; - } - return 0; -} - -int versioncompare(const struct versionrevision *version, - const struct versionrevision *refversion) -{ - int r; - - if (version->epoch > refversion->epoch) return 1; - if (version->epoch < refversion->epoch) return -1; - r= verrevcmp(version->version,refversion->version); if (r) return r; - r= verrevcmp(version->revision,refversion->revision); if (r) return r; - return r; -} - -int versionsatisfied3(const struct versionrevision *it, - const struct versionrevision *ref, - const char *op) -{ - int r; - r= versioncompare(it,ref); - if (strcmp(op, "<=") == 0 || strcmp(op, "<") == 0) - return r <= 0; - if (strcmp(op, ">=") == 0 || strcmp(op, ">") == 0) - return r >= 0; - if (strcmp(op, "<<") == 0) - return r < 0; - if (strcmp(op, ">>") == 0) - return r > 0; - if (strcmp(op, "=") == 0) - return r == 0; - fprintf(stderr, "unknown operator: %s", op); - - exit(1); -} - -const char *parseversion(struct versionrevision *rversion, const char *string) -{ - char *hyphen, *colon, *eepochcolon; - unsigned long epoch; - - if (!*string) return _("version string is empty"); - - colon= strchr(string,':'); - if (colon) { - epoch= strtoul(string,&eepochcolon,10); - if (colon != eepochcolon) return _("epoch in version is not number"); - if (!*++colon) return _("nothing after colon in version number"); - string= colon; - rversion->epoch= epoch; - } else { - rversion->epoch= 0; - } - - rversion->revision = ""; - - rversion->version= malloc(strlen(string)+1); - strcpy(rversion->version, string); - -#if 0 - fprintf(stderr,"Parsed version: %lu, %s\n", - rversion->epoch, - rversion->version); -#endif - - return 0; -} - -int main(int argc, char *argv[]) -{ - const char *err; - struct versionrevision ver, ref; - - if (argc < 4) { - fprintf(stderr, "usage: %s: version op refversion\n", argv[0]); - return 2; - } - - err = parseversion(&ver, argv[1]); - if (err) { - fprintf(stderr, "Invalid version `%s': %s\n", argv[1], err); - return 2; - } - - err = parseversion(&ref, argv[3]); - if (err) { - fprintf(stderr, "Invalid version `%s': %s\n", argv[3], err); - return 2; - } - - return ! versionsatisfied3(&ver, &ref, argv[2]); -} - - |