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REVIEWED: IsFileExtension() to avoid other modules dependency #5071

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Ray
2025-08-08 23:01:04 +02:00
parent f73b04c42c
commit c6241b91a2
2 changed files with 41 additions and 14 deletions
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53
src/rcore.c
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@@ -113,7 +113,7 @@
#include <stdlib.h> // Required for: srand(), rand(), atexit()
#include <stdio.h> // Required for: sprintf() [Used in OpenURL()]
#include <string.h> // Required for: strrchr(), strcmp(), strlen(), memset()
#include <string.h> // Required for: strlen(), strcpy(), strcmp(), strrchr(), memset()
#include <time.h> // Required for: time() [Used in InitTimer()]
#include <math.h> // Required for: tan() [Used in BeginMode3D()], atan2f() [Used in LoadVrStereoConfig()]
@@ -1940,34 +1940,61 @@ bool FileExists(const char *fileName)
}
// Check file extension
// TODO: Avoid [rtext] module dependency
bool IsFileExtension(const char *fileName, const char *ext)
{
#define MAX_FILE_EXTENSION_LENGTH 16
#define MAX_FILE_EXTENSIONS 32
bool result = false;
const char *fileExt = GetFileExtension(fileName);
if (fileExt != NULL)
{
#if defined(SUPPORT_MODULE_RTEXT) && defined(SUPPORT_TEXT_MANIPULATION)
int extCount = 0;
char **checkExts = TextSplit(ext, ';', &extCount); // WARNING: Module required: rtext
char fileExtLower[MAX_FILE_EXTENSION_LENGTH + 1] = { 0 };
strncpy(fileExtLower, TextToLower(fileExt), MAX_FILE_EXTENSION_LENGTH); // WARNING: Module required: rtext
int fileExtLen = strlen(fileExt);
char fileExtLower[8] = { 0 };
char *fileExtLowerPtr = fileExtLower;
for (int i = 0; i < fileExtLen; i++)
{
// Copy and convert to lower-case
if ((fileExt[i] >= 'A') && (fileExt[i] <= 'Z')) fileExtLower[i] = fileExt[i] + 32;
else fileExtLower[i] = fileExt[i];
}
int extCount = 1;
int extLen = strlen(ext);
char *extList = (char *)RL_CALLOC(extLen + 1, 1);
char *extListPtrs[MAX_FILE_EXTENSIONS] = { 0 };
strcpy(extList, ext);
extListPtrs[0] = extList;
for (int i = 0; i < extLen; i++)
{
// Convert to lower-case if extension is upper-case
if ((extList[i] >= 'A') && (extList[i] <= 'Z')) extList[i] += 32;
// Get pointer to next extension and add null-terminator
if ((extList[i] == ';') && (extCount < (MAX_FILE_EXTENSIONS - 1)))
{
extList[i] = '\0';
extListPtrs[extCount] = extList + i + 1;
extCount++;
}
}
for (int i = 0; i < extCount; i++)
{
if (strcmp(fileExtLower, TextToLower(checkExts[i])) == 0)
// Consider the case where extension provided
// does not start with the '.'
fileExtLowerPtr = fileExtLower;
if (extListPtrs[i][0] != '.') fileExtLowerPtr++;
if (strcmp(fileExtLowerPtr, extListPtrs[i]) == 0)
{
result = true;
break;
}
}
#else
if (strcmp(fileExt, ext) == 0) result = true;
#endif
RL_FREE(extList);
}
return result;