mirror of
https://github.com/moparisthebest/pacman
synced 2024-12-21 23:38:49 -05:00
- fixed a small memory leak
- made strverscmp implementation static
This commit is contained in:
Aurelien Foret
parent
f3975acf90
commit
ce6dcb5159
@ -26,103 +26,7 @@
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/* pacman */
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#include "rpmvercmp.h"
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/* this function was taken from rpm 4.0.4 and rewritten */
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int rpmvercmp(const char *a, const char *b)
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{
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char *str1, *str2;
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char *one, *two;
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char *rel1 = NULL, *rel2 = NULL;
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char oldch1, oldch2;
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int is1num, is2num;
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int rc;
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if(!strcmp(a,b)) {
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return(0);
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}
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/* ORE
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* the memory allocated here is never freed... */
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str1 = strdup(a);
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str2 = strdup(b);
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/* lose the release number */
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for(one = str1; *one && *one != '-'; one++);
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if(one) {
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*one = '\0';
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rel1 = ++one;
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}
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for(two = str2; *two && *two != '-'; two++);
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if(two) {
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*two = '\0';
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rel2 = ++two;
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}
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one = str1;
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two = str2;
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while(*one || *two) {
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while(*one && !isalnum(*one)) one++;
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while(*two && !isalnum(*two)) two++;
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str1 = one;
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str2 = two;
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/* find the next segment for each string */
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if(isdigit(*str1)) {
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is1num = 1;
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while(*str1 && isdigit(*str1)) str1++;
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} else {
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is1num = 0;
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while(*str1 && isalpha(*str1)) str1++;
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}
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if(isdigit(*str2)) {
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is2num = 1;
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while(*str2 && isdigit(*str2)) str2++;
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} else {
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is2num = 0;
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while(*str2 && isalpha(*str2)) str2++;
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}
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oldch1 = *str1;
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*str1 = '\0';
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oldch2 = *str2;
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*str2 = '\0';
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/* see if we ran out of segments on one string */
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if(one == str1 && two != str2) {
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return(is2num ? -1 : 1);
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}
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if(one != str1 && two == str2) {
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return(is1num ? 1 : -1);
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}
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/* see if we have a type mismatch (ie, one is alpha and one is digits) */
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if(is1num && !is2num) return(1);
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if(!is1num && is2num) return(-1);
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if(is1num) while(*one == '0') one++;
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if(is2num) while(*two == '0') two++;
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rc = strverscmp(one, two);
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if(rc) return(rc);
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*str1 = oldch1;
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*str2 = oldch2;
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one = str1;
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two = str2;
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}
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if((!*one) && (!*two)) {
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/* compare release numbers */
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if(rel1 && rel2) return(rpmvercmp(rel1, rel2));
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return(0);
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}
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return(*one ? 1 : -1);
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}
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#ifndef HAVE_STRVERSCMP
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/* GNU's strverscmp() function, taken from glibc 2.3.2 sources
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*/
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@ -157,13 +61,12 @@ int rpmvercmp(const char *a, const char *b)
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#define CMP 2
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#define LEN 3
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/* Compare S1 and S2 as strings holding indices/version numbers,
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returning less than, equal to or greater than zero if S1 is less than,
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equal to or greater than S2 (for more info, see the texinfo doc).
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*/
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int strverscmp (s1, s2)
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static int strverscmp (s1, s2)
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const char *s1;
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const char *s2;
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{
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@ -236,4 +139,102 @@ int strverscmp (s1, s2)
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#endif
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/* this function was taken from rpm 4.0.4 and rewritten */
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int rpmvercmp(const char *a, const char *b)
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{
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char str1[64], str2[64];
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char *ptr1, *ptr2;
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char *one, *two;
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char *rel1 = NULL, *rel2 = NULL;
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char oldch1, oldch2;
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int is1num, is2num;
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int rc;
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if(!strcmp(a,b)) {
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return(0);
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}
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/* ORE
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* the memory allocated here is never freed... */
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strncpy(str1, a, 64);
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str1[63] = 0;
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strncpy(str2, b, 64);
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str2[63] = 0;
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/* lose the release number */
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for(one = str1; *one && *one != '-'; one++);
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if(one) {
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*one = '\0';
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rel1 = ++one;
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}
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for(two = str2; *two && *two != '-'; two++);
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if(two) {
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*two = '\0';
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rel2 = ++two;
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}
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one = str1;
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two = str2;
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while(*one || *two) {
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while(*one && !isalnum(*one)) one++;
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while(*two && !isalnum(*two)) two++;
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ptr1 = one;
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ptr2 = two;
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/* find the next segment for each string */
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if(isdigit(*ptr1)) {
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is1num = 1;
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while(*ptr1 && isdigit(*ptr1)) ptr1++;
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} else {
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is1num = 0;
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while(*ptr1 && isalpha(*ptr1)) ptr1++;
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}
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if(isdigit(*ptr2)) {
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is2num = 1;
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while(*ptr2 && isdigit(*ptr2)) ptr2++;
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} else {
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is2num = 0;
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while(*ptr2 && isalpha(*ptr2)) ptr2++;
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}
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oldch1 = *ptr1;
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*ptr1 = '\0';
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oldch2 = *ptr2;
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*ptr2 = '\0';
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/* see if we ran out of segments on one string */
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if(one == ptr1 && two != ptr2) {
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return(is2num ? -1 : 1);
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}
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if(one != ptr1 && two == ptr2) {
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return(is1num ? 1 : -1);
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}
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/* see if we have a type mismatch (ie, one is alpha and one is digits) */
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if(is1num && !is2num) return(1);
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if(!is1num && is2num) return(-1);
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if(is1num) while(*one == '0') one++;
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if(is2num) while(*two == '0') two++;
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rc = strverscmp(one, two);
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if(rc) return(rc);
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*ptr1 = oldch1;
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*ptr2 = oldch2;
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one = ptr1;
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two = ptr2;
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}
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if((!*one) && (!*two)) {
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/* compare release numbers */
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if(rel1 && rel2) return(rpmvercmp(rel1, rel2));
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return(0);
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}
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return(*one ? 1 : -1);
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}
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/* vim: set ts=2 sw=2 noet: */
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@ -23,10 +23,6 @@
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int rpmvercmp(const char *a, const char *b);
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#ifndef HAVE_STRVERSCMP
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int strverscmp(const char *s1, const char *s2);
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#endif
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#endif
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/* vim: set ts=2 sw=2 noet: */
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