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Reviewed LoadBMFont() to load data from memory #1232

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This commit is contained in:
raysan5 2020-05-22 02:19:45 +02:00
parent 70cd2f1edf
commit 76f8e84901
1 changed files with 37 additions and 30 deletions
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65
src/text.c
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@ -1662,6 +1662,16 @@ int GetNextCodepoint(const char *text, int *bytesProcessed)
// Module specific Functions Definition
//----------------------------------------------------------------------------------
#if defined(SUPPORT_FILEFORMAT_FNT)
// Read a line from memory
static int GetLine(const char *origin, char *buffer, int maxLength)
{
int count = 0;
for (; count < maxLength; count++) if (origin[count] == '\n') break;
memcpy(buffer, origin, count);
return count;
}
// Load a BMFont file (AngelCode font file)
static Font LoadBMFont(const char *fileName)
{
@ -1673,49 +1683,46 @@ static Font LoadBMFont(const char *fileName)
char *searchPoint = NULL;
int fontSize = 0;
int texWidth = 0;
int texHeight = 0;
char texFileName[129];
int charsCount = 0;
int imWidth = 0;
int imHeight = 0;
char imFileName[129];
int base = 0; // Useless data
FILE *fntFile = NULL;
fntFile = fopen(fileName, "rt");
if (fntFile == NULL)
{
TRACELOG(LOG_WARNING, "FILEIO: [%s] Failed to open FNT file", fileName);
return font;
}
unsigned char *fileText = LoadFileText(fileName);
unsigned char *fileTextPtr = fileText;
// NOTE: We skip first line, it contains no useful information
fgets(buffer, MAX_BUFFER_SIZE, fntFile);
//searchPoint = strstr(buffer, "size");
//sscanf(searchPoint, "size=%i", &fontSize);
int lineBytes = GetLine(fileTextPtr, buffer, MAX_BUFFER_SIZE);
fileTextPtr += (lineBytes + 1);
fgets(buffer, MAX_BUFFER_SIZE, fntFile);
// Read line data
lineBytes = GetLine(fileTextPtr, buffer, MAX_BUFFER_SIZE);
searchPoint = strstr(buffer, "lineHeight");
sscanf(searchPoint, "lineHeight=%i base=%i scaleW=%i scaleH=%i", &fontSize, &base, &texWidth, &texHeight);
sscanf(searchPoint, "lineHeight=%i base=%i scaleW=%i scaleH=%i", &fontSize, &base, &imWidth, &imHeight);
fileTextPtr += (lineBytes + 1);
TRACELOGD("FONT: [%s] Loaded font info:", fileName);
TRACELOGD(" > Base size: %i", fontSize);
TRACELOGD(" > Texture scale: %ix%i", texWidth, texHeight);
TRACELOGD(" > Base size: %i", fontSize);
TRACELOGD(" > Texture scale: %ix%i", imWidth, imHeight);
fgets(buffer, MAX_BUFFER_SIZE, fntFile);
lineBytes = GetLine(fileTextPtr, buffer, MAX_BUFFER_SIZE);
searchPoint = strstr(buffer, "file");
sscanf(searchPoint, "file=\"%128[^\"]\"", texFileName);
sscanf(searchPoint, "file=\"%128[^\"]\"", imFileName);
fileTextPtr += (lineBytes + 1);
TRACELOGD(" > Texture filename: %s", texFileName);
TRACELOGD(" > Texture filename: %s", imFileName);
fgets(buffer, MAX_BUFFER_SIZE, fntFile);
lineBytes = GetLine(fileTextPtr, buffer, MAX_BUFFER_SIZE);
searchPoint = strstr(buffer, "count");
sscanf(searchPoint, "count=%i", &charsCount);
fileTextPtr += (lineBytes + 1);
TRACELOGD(" > Chars count: %i", charsCount);
// Compose correct path using route of .fnt file (fileName) and texFileName
// Compose correct path using route of .fnt file (fileName) and imFileName
char *texPath = NULL;
char *lastSlash = NULL;
@ -1726,12 +1733,12 @@ static Font LoadBMFont(const char *fileName)
}
// NOTE: We need some extra space to avoid memory corruption on next allocations!
texPath = RL_MALLOC(TextLength(fileName) - TextLength(lastSlash) + TextLength(texFileName) + 4);
texPath = RL_MALLOC(TextLength(fileName) - TextLength(lastSlash) + TextLength(imFileName) + 4);
// NOTE: strcat() and strncat() required a '\0' terminated string to work!
*texPath = '\0';
strncat(texPath, fileName, TextLength(fileName) - TextLength(lastSlash) + 1);
strncat(texPath, texFileName, TextLength(texFileName));
strncat(texPath, imFileName, TextLength(imFileName));
TRACELOGD(" > Texture loading path: %s", texPath);
@ -1772,9 +1779,10 @@ static Font LoadBMFont(const char *fileName)
for (int i = 0; i < charsCount; i++)
{
fgets(buffer, MAX_BUFFER_SIZE, fntFile);
lineBytes = GetLine(fileTextPtr, buffer, MAX_BUFFER_SIZE);
sscanf(buffer, "char id=%i x=%i y=%i width=%i height=%i xoffset=%i yoffset=%i xadvance=%i",
&charId, &charX, &charY, &charWidth, &charHeight, &charOffsetX, &charOffsetY, &charAdvanceX);
fileTextPtr += (lineBytes + 1);
// Get character rectangle in the font atlas texture
font.recs[i] = (Rectangle){ (float)charX, (float)charY, (float)charWidth, (float)charHeight };
@ -1790,8 +1798,7 @@ static Font LoadBMFont(const char *fileName)
}
UnloadImage(imFont);
fclose(fntFile);
free(fileText);
if (font.texture.id == 0)
{