Add mg_strcasecmp()

CL: Add mg_strcasecmp() PUBLISHED_FROM=cd2a26fa12473bfa0f5e7a0a1d34fb86562ee082

Author: Deomid Ryabkov

common/mg_str.c

@@ -96,8 +96,10 @@ int mg_strcmp(const struct mg_str str1, const struct mg_str str2) WEAK;
 int mg_strcmp(const struct mg_str str1, const struct mg_str str2) {
  size_t i = 0;
  while (i < str1.len && i < str2.len) {
- if (str1.p[i] < str2.p[i]) return -1;
- if (str1.p[i] > str2.p[i]) return 1;
+ int c1 = str1.p[i];
+ int c2 = str2.p[i];
+ if (c1 < c2) return -1;
+ if (c1 > c2) return 1;
  i++;
  }
  if (i < str1.len) return 1;
@@ -119,6 +121,21 @@ int mg_strncmp(const struct mg_str str1, const struct mg_str str2, size_t n) {
  return mg_strcmp(s1, s2);
 }
 
+int mg_strcasecmp(const struct mg_str str1, const struct mg_str str2) WEAK;
+int mg_strcasecmp(const struct mg_str str1, const struct mg_str str2) {
+ size_t i = 0;
+ while (i < str1.len && i < str2.len) {
+ int c1 = tolower((int) str1.p[i]);
+ int c2 = tolower((int) str2.p[i]);
+ if (c1 < c2) return -1;
+ if (c1 > c2) return 1;
+ i++;
+ }
+ if (i < str1.len) return 1;
+ if (i < str2.len) return -1;
+ return 0;
+}
+
 void mg_strfree(struct mg_str *s) WEAK;
 void mg_strfree(struct mg_str *s) {
  char *sp = (char *) s->p;

common/mg_str.h

@@ -85,6 +85,11 @@ int mg_strcmp(const struct mg_str str1, const struct mg_str str2);
  */
 int mg_strncmp(const struct mg_str str1, const struct mg_str str2, size_t n);
 
+/*
+ * Compare two `mg_str`s ignoreing case; return value is the same as `strcmp`.
+ */
+int mg_strcasecmp(const struct mg_str str1, const struct mg_str str2);
+
 /*
  * Free the string (assuming it was heap allocated).
  */

mjs.c

@@ -2093,6 +2093,11 @@ int mg_strcmp(const struct mg_str str1, const struct mg_str str2);
  */
 int mg_strncmp(const struct mg_str str1, const struct mg_str str2, size_t n);
 
+/*
+ * Compare two `mg_str`s ignoreing case; return value is the same as `strcmp`.
+ */
+int mg_strcasecmp(const struct mg_str str1, const struct mg_str str2);
+
 /*
  * Free the string (assuming it was heap allocated).
  */
@@ -5639,8 +5644,10 @@ int mg_strcmp(const struct mg_str str1, const struct mg_str str2) WEAK;
 int mg_strcmp(const struct mg_str str1, const struct mg_str str2) {
  size_t i = 0;
  while (i < str1.len && i < str2.len) {
- if (str1.p[i] < str2.p[i]) return -1;
- if (str1.p[i] > str2.p[i]) return 1;
+ int c1 = str1.p[i];
+ int c2 = str2.p[i];
+ if (c1 < c2) return -1;
+ if (c1 > c2) return 1;
  i++;
  }
  if (i < str1.len) return 1;
@@ -5662,6 +5669,21 @@ int mg_strncmp(const struct mg_str str1, const struct mg_str str2, size_t n) {
  return mg_strcmp(s1, s2);
 }
 
+int mg_strcasecmp(const struct mg_str str1, const struct mg_str str2) WEAK;
+int mg_strcasecmp(const struct mg_str str1, const struct mg_str str2) {
+ size_t i = 0;
+ while (i < str1.len && i < str2.len) {
+ int c1 = tolower((int) str1.p[i]);
+ int c2 = tolower((int) str2.p[i]);
+ if (c1 < c2) return -1;
+ if (c1 > c2) return 1;
+ i++;
+ }
+ if (i < str1.len) return 1;
+ if (i < str2.len) return -1;
+ return 0;
+}
+
 void mg_strfree(struct mg_str *s) WEAK;
 void mg_strfree(struct mg_str *s) {
  char *sp = (char *) s->p;