Issue 7: Factored out ini_parse_file() so users can parse INI file with just a FILE* instead of a filename, and use fmemopen.

Forgot to commit examples/test.ini in previous commit.
Fix strncmp redefine warning when compiling tests/unittest.c.

examples/test.ini

@@ -1,4 +1,4 @@
-; Test config file for ini_test.c
+; Test config file for ini_example.c and INIReaderTest.cpp
 
 [Protocol]             ; Protocol configuration
 Version=6              ; IPv6
@@ -6,3 +6,4 @@ Version=6              ; IPv6
 [User]
 Name = Bob Smith       ; Spaces around '=' are stripped
 Email = bob@smith.com  ; And comments (like this) ignored
+Active = True          ; Test a boolean

ini.c

@@ -56,16 +56,16 @@ static char* strncpy0(char* dest, const char* src, size_t size)
 }
 
 /* See documentation in header file. */
-int ini_parse(const char* filename,
-              int (*handler)(void*, const char*, const char*, const char*),
-              void* user)
+int ini_parse_file(FILE* file,
+                   int (*handler)(void*, const char*, const char*,
+                                  const char*),
+                   void* user)
 {
     /* Uses a fair bit of stack (use heap instead if you need to) */
     char line[MAX_LINE];
     char section[MAX_SECTION] = "";
     char prev_name[MAX_NAME] = "";
 
-    FILE* file;
     char* start;
     char* end;
     char* name;
@@ -73,10 +73,6 @@ int ini_parse(const char* filename,
     int lineno = 0;
     int error = 0;
 
-    file = fopen(filename, "r");
-    if (!file)
-        return -1;
-
     /* Scan through file line by line */
     while (fgets(line, sizeof(line), file) != NULL) {
         lineno++;
@@ -134,7 +130,21 @@ int ini_parse(const char* filename,
         }
     }
 
-    fclose(file);
-
+    return error;
+}
+
+/* See documentation in header file. */
+int ini_parse(const char* filename,
+              int (*handler)(void*, const char*, const char*, const char*),
+              void* user)
+{
+    FILE* file;
+    int error;
+
+    file = fopen(filename, "r");
+    if (!file)
+        return -1;
+    error = ini_parse_file(file, handler, user);
+    fclose(file);
     return error;
 }

ini.h

@@ -32,6 +32,13 @@ int ini_parse(const char* filename,
                              const char* name, const char* value),
               void* user);
 
+/* Same as ini_parse(), but takes a FILE* instead of filename. This doesn't
+   close the file when it's finished -- the caller must do that. */
+int ini_parse_file(FILE* file,
+                   int (*handler)(void* user, const char* section,
+                                  const char* name, const char* value),
+                   void* user);
+
 /* Nonzero to allow multi-line value parsing, in the style of Python's
    ConfigParser. If allowed, ini_parse() will call the handler with the same
    name for each subsequent line parsed. */

tests/unittest.c

@@ -14,7 +14,7 @@ tcc -DINI_ALLOW_MULTILINE=0 ../ini.c -run unittest.c > baseline_single.txt
 
 #include <stdio.h>
 #include <stdlib.h>
-
+#include <string.h>
 #include "../ini.h"
 
 int User;