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authorJohn Denker <jsd@av8n.com>2012-11-23 00:01:04 (GMT)
committerJohn Denker <jsd@av8n.com>2012-11-23 00:01:04 (GMT)
commit3c9817f94592907c8c19a8b8f97af87dad3dceaf (patch)
tree5f2433dbd4d7a0c872fd3400897458b79effac67 /tools/utils.c
parentbf1bf1c43a82ec167ae80f185fe11255cf3a5237 (diff)
move case-insensitive string stuff to utils.h
Diffstat (limited to 'tools/utils.c')
-rw-r--r--tools/utils.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/tools/utils.c b/tools/utils.c
index a7c2878..6dbbff4 100644
--- a/tools/utils.c
+++ b/tools/utils.c
@@ -87,3 +87,31 @@ string purify(const string arg){
}
return rslt;
}
+
+// Returns negative if a is less than b in alphabetical order
+// returns 0 if they are the same, or positive if a is greater.
+// Like perl cmp operator, but ignores case.
+int cmp_casefold(const std::string& a, const std::string& b) {
+ string::const_iterator aa, bb;
+ aa = a.begin();
+ bb = b.begin();
+ while (aa != a.end() && bb != b.end()){
+ char ca = tolower(*aa++);
+ char cb = tolower(*bb++);
+ if (ca != cb) return ca < cb ? -2 : 2;
+ }
+ if (aa != a.end()) return 1; // a is longer
+ if (bb != b.end()) return -1; // b is longer
+ return 0;
+}
+
+string noCR(const string bar){
+ string foo(bar);
+ int len = foo.length();
+ if (len){
+ if (foo[len-1] == '\r') {
+ foo.erase(len-1);
+ }
+ }
+ return foo;
+}