index : pacman | |
Archlinux32 fork of pacman | gitolite user |
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author | Aaron Griffin <aaron@archlinux.org> | 2006-10-15 19:31:03 +0000 |
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committer | Aaron Griffin <aaron@archlinux.org> | 2006-10-15 19:31:03 +0000 |
commit | d37ad048732fbcef38aec001993553896dbe4198 (patch) | |
tree | c80472214aae0cd94c32ac00d613d38d51bc1adf /lib/libalpm/versioncmp.c | |
parent | 83381bd21748d79f46247fab17877bc5c440a8de (diff) |
-rw-r--r-- | lib/libalpm/versioncmp.c | 106 |
diff --git a/lib/libalpm/versioncmp.c b/lib/libalpm/versioncmp.c index 71b1f4ad..652b7efb 100644 --- a/lib/libalpm/versioncmp.c +++ b/lib/libalpm/versioncmp.c @@ -1,7 +1,9 @@ /* * versioncmp.c - * + * * Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org> + * Copyright (c) 2005 by Aurelien Foret <orelien@chez.com> + * Copyright (c) 2005, 2006 by Miklos Vajna <vmiklos@frugalware.org> * * 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 @@ -141,122 +143,96 @@ static int strverscmp (s1, s2) #endif /* this function was taken from rpm 4.0.4 and rewritten */ -int _alpm_versioncmp(const char *a, const char *b) { - char *str1, *ostr1, *str2, *ostr2; +int _alpm_versioncmp(const char *a, const char *b) +{ + char str1[64], str2[64]; + char *ptr1, *ptr2; char *one, *two; char *rel1 = NULL, *rel2 = NULL; char oldch1, oldch2; int is1num, is2num; - int rc, rv; - - if (!strcmp(a,b)) { + int rc; + + if(!strcmp(a,b)) { return(0); } - str1 = strdup(a); - ostr1 = str1; - str2 = strdup(b); - ostr2 = str2; + strncpy(str1, a, 64); + str1[63] = 0; + strncpy(str2, b, 64); + str2[63] = 0; /* lose the release number */ for(one = str1; *one && *one != '-'; one++); - if(*one) { + if(one) { *one = '\0'; rel1 = ++one; - if (*rel1 == '\0') - rel1 = NULL; } for(two = str2; *two && *two != '-'; two++); - if(*two) { + if(two) { *two = '\0'; rel2 = ++two; - if (*rel2 == '\0') - rel2 = NULL; } one = str1; two = str2; while(*one || *two) { - while(*one && !isalnum(*one)) one++; - while(*two && !isalnum(*two)) two++; + while(*one && !isalnum((int)*one)) one++; + while(*two && !isalnum((int)*two)) two++; - str1 = one; - str2 = two; + ptr1 = one; + ptr2 = two; /* find the next segment for each string */ - if(isdigit(*str1)) { + if(isdigit((int)*ptr1)) { is1num = 1; - while(*str1 && isdigit(*str1)) str1++; + while(*ptr1 && isdigit((int)*ptr1)) ptr1++; } else { is1num = 0; - while(*str1 && isalpha(*str1)) str1++; + while(*ptr1 && isalpha((int)*ptr1)) ptr1++; } - if(isdigit(*str2)) { + if(isdigit((int)*ptr2)) { is2num = 1; - while(*str2 && isdigit(*str2)) str2++; + while(*ptr2 && isdigit((int)*ptr2)) ptr2++; } else { is2num = 0; - while(*str2 && isalpha(*str2)) str2++; + while(*ptr2 && isalpha((int)*ptr2)) ptr2++; } - oldch1 = *str1; - *str1 = '\0'; - oldch2 = *str2; - *str2 = '\0'; + oldch1 = *ptr1; + *ptr1 = '\0'; + oldch2 = *ptr2; + *ptr2 = '\0'; /* see if we ran out of segments on one string */ - if(one == str1 && two != str2) { - free(ostr1); - free(ostr2); + if(one == ptr1 && two != ptr2) { return(is2num ? -1 : 1); } - if(one != str1 && two == str2) { - free(ostr1); - free(ostr2); + if(one != ptr1 && two == ptr2) { return(is1num ? 1 : -1); } /* see if we have a type mismatch (ie, one is alpha and one is digits) */ - if(is1num && !is2num) { - free(ostr1); - free(ostr2); - return(1); - } - if(!is1num && is2num) { - free(ostr1); - free(ostr2); - return(-1); - } + if(is1num && !is2num) return(1); + if(!is1num && is2num) return(-1); if(is1num) while(*one == '0') one++; if(is2num) while(*two == '0') two++; rc = strverscmp(one, two); - if(rc) { - free(ostr1); - free(ostr2); - return(rc); - } + if(rc) return(rc); - *str1 = oldch1; - *str2 = oldch2; - one = str1; - two = str2; + *ptr1 = oldch1; + *ptr2 = oldch2; + one = ptr1; + two = ptr2; } if((!*one) && (!*two)) { /* compare release numbers */ - if(rel1 && rel2) { - rv = _alpm_versioncmp(rel1, rel2); - free(ostr1); - free(ostr2); - return rv; - } else { - free(ostr1); - free(ostr2); - return(0); - } + if(rel1 && rel2) return(_alpm_versioncmp(rel1, rel2)); + return(0); } return(*one ? 1 : -1); |