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Issue #142: fl_filename_absolute correctly handles trailing "..".

This commit is contained in:
Matthias Melcher 2022-06-12 14:07:01 +02:00
parent c6516673ee
commit e6ca751e92
1 changed files with 10 additions and 3 deletions
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13
src/filename_absolute.cxx
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@ -69,19 +69,26 @@ int Fl_System_Driver::filename_absolute(char *to, int tolen, const char *from) {
return 0;
}
a = temp+strlen(temp);
/* remove trailing '/' in current working directory */
if (isdirsep(*(a-1))) a--;
/* remove intermediate . and .. names: */
while (*start == '.') {
if (start[1]=='.' && isdirsep(start[2])) {
if (start[1]=='.' && (isdirsep(start[2]) || start[2]==0) ) {
// found "..", remove the last directory segment form cwd
char *b;
for (b = a-1; b >= temp && !isdirsep(*b); b--) {/*empty*/}
if (b < temp) break;
a = b;
start += 3;
if (start[2]==0)
start += 2; // Skip to end of path
else
start += 3; // Skip over dir separator
} else if (isdirsep(start[1])) {
// found "./" in path, just skip it
start += 2;
} else if (!start[1]) {
start ++; // Skip lone "."
// found "." at end of path, just skip it
start ++;
break;
} else
break;