Fixed supportsUTF8 and call it

Removed some warnings
Closes #7

Author: posva

CMakeLists.txt

@@ -4,8 +4,9 @@ project(catimg)
 set(EXECUTABLE_OUTPUT_PATH ${PROJECT_SOURCE_DIR}/bin)
 
 # set soem options
-#set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Wall -Wextra -std=c99 -g")
-set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -Wall -Wextra -Os -std=c99")
+#set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Wall -Wextra -g -std=c99 -Wno-unused-result")
+#set(CMAKE_BUILD_TYPE Debug)
+set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -Wall -Wextra -Os -std=c99 -Wno-unused-result")
 set(CMAKE_BUILD_TYPE Release)
 
 set(SRC ${PROJECT_SOURCE_DIR}/src)

src/catimg.c

@@ -40,7 +40,9 @@ char supportsUTF8() {
         const char* LANG = getenv("LANG");
         const char* LC_CTYPE = getenv("LC_CTYPE");
         const char* UTF = "UTF-8";
-        return strstr(LC_ALL, UTF) || strstr(LANG, UTF) || strstr(LC_CTYPE, UTF);
+        return (LC_ALL && strstr(LC_ALL, UTF))
+                || (LANG && strstr(LANG, UTF))
+                || (LC_CTYPE && strstr(LC_CTYPE, UTF));
 }
 
 int main(int argc, char *argv[])
@@ -81,7 +83,7 @@ int main(int argc, char *argv[])
         }
 
         if (precision == 0 || precision > 2) {
-               if (supportsUTF8)
+               if (supportsUTF8())
                        precision = 2;
                else
                        precision = 1;

src/sh_image.c

@@ -23,8 +23,7 @@ STBIDEF unsigned char *stbi_xload(char const *filename, int *x, int *y, int *fra
 
         stbi__start_file(&s, f);
 
-        if (stbi__gif_test(&s))
-        {
+        if (stbi__gif_test(&s)) {
                 stbi__gif g;
                 gif_result head;
                 gif_result *prev = 0, *gr = &head;
@@ -34,10 +33,8 @@ STBIDEF unsigned char *stbi_xload(char const *filename, int *x, int *y, int *fra
 
                 *frames = 0;
 
-                while (gr->data = stbi__gif_load_next(&s, &g, channels, 4))
-                {
-                        if (gr->data == (unsigned char*)&s)
-                        {
+                while ((gr->data = stbi__gif_load_next(&s, &g, channels, 4))) {
+                        if (gr->data == (unsigned char*)&s) {
                                 gr->data = 0;
                                 break;
                         }
@@ -53,25 +50,22 @@ STBIDEF unsigned char *stbi_xload(char const *filename, int *x, int *y, int *fra
                 if (gr != &head)
                         STBI_FREE(gr);
 
-                if (*frames > 0)
-                {
+                if (*frames > 0) {
                         *x = g.w;
                         *y = g.h;
                 }
 
                 result = head.data;
 
-                if (*frames > 1)
-                {
+                if (*frames > 1) {
                         unsigned int size = 4 * g.w * g.h;
                         unsigned char *p = 0;
 
                         result = (unsigned char*)stbi__malloc(*frames * (size + 2));
                         gr = &head;
                         p = result;
 
-                        while (gr)
-                        {
+                        while (gr) {
                                 prev = gr;
                                 memcpy(p, gr->data, size);
                                 p += size;
@@ -83,9 +77,7 @@ STBIDEF unsigned char *stbi_xload(char const *filename, int *x, int *y, int *fra
                                 if (prev != &head) STBI_FREE(prev);
                         }
                 }
-        }
-        else
-        {
+        } else {
                 result = stbi__load_main(&s, x, y, channels, 0);
                 *frames = !!result;
         }
@@ -142,7 +134,7 @@ void img_load_from_file(image_t *img, const char* file)
                 }
 
                 // fill the array
-                void (*pixelSetter)(color_t *pixel, unsigned char* ptr);
+                void (*pixelSetter)(color_t *pixel, unsigned char* ptr) = &setPixelGray;
                 switch (channels) {
                         case 1:
                                 pixelSetter = &setPixelGray;