bsnes/higan/nall/string/compare.hpp

70 lines
1.7 KiB
C++
Executable File

#ifdef NALL_STRING_INTERNAL_HPP
namespace nall {
char chrlower(char c) {
return (c >= 'A' && c <= 'Z') ? c + ('a' - 'A') : c;
}
char chrupper(char c) {
return (c >= 'a' && c <= 'z') ? c - ('a' - 'A') : c;
}
int istrcmp(const char *str1, const char *str2) {
while(*str1) {
if(chrlower(*str1) != chrlower(*str2)) break;
str1++, str2++;
}
return (int)chrlower(*str1) - (int)chrlower(*str2);
}
bool strbegin(const char *str, const char *key) {
int i, ssl = strlen(str), ksl = strlen(key);
if(ksl > ssl) return false;
return (!memcmp(str, key, ksl));
}
bool istrbegin(const char *str, const char *key) {
int ssl = strlen(str), ksl = strlen(key);
if(ksl > ssl) return false;
for(int i = 0; i < ksl; i++) {
if(str[i] >= 'A' && str[i] <= 'Z') {
if(str[i] != key[i] && str[i]+0x20 != key[i])return false;
} else if(str[i] >= 'a' && str[i] <= 'z') {
if(str[i] != key[i] && str[i]-0x20 != key[i])return false;
} else {
if(str[i] != key[i])return false;
}
}
return true;
}
bool strend(const char *str, const char *key) {
int ssl = strlen(str), ksl = strlen(key);
if(ksl > ssl) return false;
return (!memcmp(str + ssl - ksl, key, ksl));
}
bool istrend(const char *str, const char *key) {
int ssl = strlen(str), ksl = strlen(key);
if(ksl > ssl) return false;
for(int i = ssl - ksl, z = 0; i < ssl; i++, z++) {
if(str[i] >= 'A' && str[i] <= 'Z') {
if(str[i] != key[z] && str[i]+0x20 != key[z])return false;
} else if(str[i] >= 'a' && str[i] <= 'z') {
if(str[i] != key[z] && str[i]-0x20 != key[z])return false;
} else {
if(str[i] != key[z])return false;
}
}
return true;
}
}
#endif