author | andyq <andyq> | 2002-10-25 18:58:30 (UTC) |
---|---|---|
committer | andyq <andyq> | 2002-10-25 18:58:30 (UTC) |
commit | 835fadbad01b725a46ffd68ca458fd39c7313ea0 (patch) (side-by-side diff) | |
tree | 4fbc213e01292e4e850ad561c387f75098e2b059 /noncore/settings/aqpkg/version.cpp | |
parent | 1d3135677f1f49b9cc87ebf01f1c4eaab3c450f4 (diff) | |
download | opie-835fadbad01b725a46ffd68ca458fd39c7313ea0.zip opie-835fadbad01b725a46ffd68ca458fd39c7313ea0.tar.gz opie-835fadbad01b725a46ffd68ca458fd39c7313ea0.tar.bz2 |
Added version handling
Diffstat (limited to 'noncore/settings/aqpkg/version.cpp') (more/less context) (ignore whitespace changes)
-rw-r--r-- | noncore/settings/aqpkg/version.cpp | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/noncore/settings/aqpkg/version.cpp b/noncore/settings/aqpkg/version.cpp new file mode 100644 index 0000000..e836da1 --- a/dev/null +++ b/noncore/settings/aqpkg/version.cpp @@ -0,0 +1,214 @@ +/* + * 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 + +class versionrevision +{ +public: + versionrevision() + { + version = 0; + } + + ~versionrevision() + { + if ( version ) + delete version; + } + + void setVersion( const char *str ) + { + version = new char[(strlen(str)+1)]; + strcpy( version, str ); + } + + unsigned long epoch; + char *version; + const char *revision; + const char *familiar_revision; +}; + +static int verrevcmp(const char *val, const char *ref) +{ + int vc, rc; + long vl, rl; + const char *vp, *rp; + + if (!val) val= ""; + if (!ref) ref= ""; + for (;;) { + vp= val; while (*vp && !isdigit(*vp)) vp++; + rp= ref; while (*rp && !isdigit(*rp)) rp++; + for (;;) { + vc= val == vp ? 0 : *val++; + rc= ref == rp ? 0 : *ref++; + if (!rc && !vc) break; + if (vc && !isalpha(vc)) vc += 256; /* assumes ASCII character set */ + if (rc && !isalpha(rc)) rc += 256; + if (vc != rc) return vc - rc; + } + val= vp; + ref= rp; + vl=0; if (isdigit(*vp)) vl= strtol(val,(char**)&val,10); + rl=0; if (isdigit(*rp)) rl= strtol(ref,(char**)&ref,10); + if (vl != rl) return vl - rl; + if (!*val && !*ref) return 0; + if (!*val) return -1; + if (!*ref) return +1; + } +} + +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 verrevcmp(version->familiar_revision,refversion->familiar_revision); +} + +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->familiar_revision = ""; + + rversion->setVersion( string ); + hyphen= strrchr(rversion->version,'-'); + if (hyphen) { + *hyphen++= 0; + if (strncmp("fam", hyphen, 3) == 0) { + rversion->familiar_revision=hyphen+3; + hyphen= strrchr(rversion->version,'-'); + if (hyphen) { + *hyphen++= 0; + rversion->revision = hyphen; + } + } else { + rversion->revision = hyphen; + } + } +/* + fprintf(stderr,"Parsed version: %lu, %s, %s, %s\n", + rversion->epoch, + rversion->version, + rversion->revision, + rversion->familiar_revision); +*/ + return 0; +} + +int compareVersions( const char *v1, const char *v2 ) +{ + const char *err; + versionrevision ver, ref; + + err = parseversion(&ref, v1); + if (err) { + fprintf(stderr, "Invalid version `%s': %s\n", v2, err); + return -2; + } + + err = parseversion(&ver, v2); + if (err) { + fprintf(stderr, "Invalid version `%s': %s\n", v1, err); + return -2; + } + + if ( versionsatisfied3( &ver, &ref, "=" ) ) + return 0; + else if ( versionsatisfied3( &ver, &ref, "<" ) ) + return -1; + else + return 1; +} + +/* +int main(int argc, char *argv[]) +{ + const char *err; + 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; + } + + printf( "Result: %d\n", versionsatisfied3(&ver, &ref, argv[2]) ); +} + +*/ |