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| Archlinux32 fork of pacman | gitolite user |
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| -rw-r--r-- | lib/libalpm/rpmvercmp.c | 197 |
diff --git a/lib/libalpm/rpmvercmp.c b/lib/libalpm/rpmvercmp.c index 151dd40b..d5b874e6 100644 --- a/lib/libalpm/rpmvercmp.c +++ b/lib/libalpm/rpmvercmp.c @@ -26,103 +26,7 @@ /* pacman */ #include "rpmvercmp.h" -/* this function was taken from rpm 4.0.4 and rewritten */ -int rpmvercmp(const char *a, const char *b) -{ - char *str1, *str2; - char *one, *two; - char *rel1 = NULL, *rel2 = NULL; - char oldch1, oldch2; - int is1num, is2num; - int rc; - - if(!strcmp(a,b)) { - return(0); - } - - /* ORE - * the memory allocated here is never freed... */ - str1 = strdup(a); - str2 = strdup(b); - - /* lose the release number */ - for(one = str1; *one && *one != '-'; one++); - if(one) { - *one = '\0'; - rel1 = ++one; - } - for(two = str2; *two && *two != '-'; two++); - if(two) { - *two = '\0'; - rel2 = ++two; - } - - one = str1; - two = str2; - - while(*one || *two) { - while(*one && !isalnum(*one)) one++; - while(*two && !isalnum(*two)) two++; - - str1 = one; - str2 = two; - - /* find the next segment for each string */ - if(isdigit(*str1)) { - is1num = 1; - while(*str1 && isdigit(*str1)) str1++; - } else { - is1num = 0; - while(*str1 && isalpha(*str1)) str1++; - } - if(isdigit(*str2)) { - is2num = 1; - while(*str2 && isdigit(*str2)) str2++; - } else { - is2num = 0; - while(*str2 && isalpha(*str2)) str2++; - } - - oldch1 = *str1; - *str1 = '\0'; - oldch2 = *str2; - *str2 = '\0'; - - /* see if we ran out of segments on one string */ - if(one == str1 && two != str2) { - return(is2num ? -1 : 1); - } - if(one != str1 && two == str2) { - return(is1num ? 1 : -1); - } - - /* see if we have a type mismatch (ie, one is alpha and one is digits) */ - 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) return(rc); - - *str1 = oldch1; - *str2 = oldch2; - one = str1; - two = str2; - } - - if((!*one) && (!*two)) { - /* compare release numbers */ - if(rel1 && rel2) return(rpmvercmp(rel1, rel2)); - return(0); - } - - return(*one ? 1 : -1); -} - #ifndef HAVE_STRVERSCMP - /* GNU's strverscmp() function, taken from glibc 2.3.2 sources */ @@ -157,13 +61,12 @@ int rpmvercmp(const char *a, const char *b) #define CMP 2 #define LEN 3 - /* Compare S1 and S2 as strings holding indices/version numbers, returning less than, equal to or greater than zero if S1 is less than, equal to or greater than S2 (for more info, see the texinfo doc). */ -int strverscmp (s1, s2) +static int strverscmp (s1, s2) const char *s1; const char *s2; { @@ -236,4 +139,102 @@ int strverscmp (s1, s2) #endif +/* this function was taken from rpm 4.0.4 and rewritten */ +int rpmvercmp(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; + + if(!strcmp(a,b)) { + return(0); + } + + /* ORE + * the memory allocated here is never freed... */ + 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) { + *one = '\0'; + rel1 = ++one; + } + for(two = str2; *two && *two != '-'; two++); + if(two) { + *two = '\0'; + rel2 = ++two; + } + + one = str1; + two = str2; + + while(*one || *two) { + while(*one && !isalnum(*one)) one++; + while(*two && !isalnum(*two)) two++; + + ptr1 = one; + ptr2 = two; + + /* find the next segment for each string */ + if(isdigit(*ptr1)) { + is1num = 1; + while(*ptr1 && isdigit(*ptr1)) ptr1++; + } else { + is1num = 0; + while(*ptr1 && isalpha(*ptr1)) ptr1++; + } + if(isdigit(*ptr2)) { + is2num = 1; + while(*ptr2 && isdigit(*ptr2)) ptr2++; + } else { + is2num = 0; + while(*ptr2 && isalpha(*ptr2)) ptr2++; + } + + oldch1 = *ptr1; + *ptr1 = '\0'; + oldch2 = *ptr2; + *ptr2 = '\0'; + + /* see if we ran out of segments on one string */ + if(one == ptr1 && two != ptr2) { + return(is2num ? -1 : 1); + } + 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) 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) return(rc); + + *ptr1 = oldch1; + *ptr2 = oldch2; + one = ptr1; + two = ptr2; + } + + if((!*one) && (!*two)) { + /* compare release numbers */ + if(rel1 && rel2) return(rpmvercmp(rel1, rel2)); + return(0); + } + + return(*one ? 1 : -1); +} + /* vim: set ts=2 sw=2 noet: */ |