/
ansilove.c
executable file
·1303 lines (1052 loc) · 43.7 KB
/
ansilove.c
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//
// ansilove.c
// AnsiLove/C
//
// Copyright (C) 2011-2016 Stefan Vogt, Brian Cassidy, Frederic Cambus.
// All rights reserved.
//
// This source code is licensed under the BSD 3-Clause License.
// See the file LICENSE for details.
//
#include "ansilove.h"
// shared method for drawing characters
void alDrawChar(gdImagePtr im, const unsigned char *font_data, int32_t int_bits,
int32_t font_size_y, int32_t position_x, int32_t position_y,
int32_t color_background, int32_t color_foreground, unsigned char character)
{
int32_t column, line;
gdImageFilledRectangle(im, position_x * int_bits, position_y*font_size_y, position_x * int_bits +
int_bits - 1, position_y * font_size_y + font_size_y - 1, color_background);
for (line = 0; line < font_size_y; line++) {
for (column = 0; column < int_bits; column++) {
if ((font_data[line+character*font_size_y] & (0x80 >> column)) != 0) {
gdImageSetPixel(im, position_x * int_bits + column, position_y*font_size_y + line, color_foreground);
if (int_bits==9 && column==7 && character > 191 && character < 224)
{
gdImageSetPixel(im, position_x * int_bits + 8, position_y * font_size_y + line, color_foreground);
}
}
}
}
}
// ANSi
void alAnsiLoader(char *input, char *output, char *retinaout, char *font, int32_t int_bits, char *mode, bool icecolors, char *fext, bool createRetinaRep)
{
// ladies and gentlemen, it's type declaration time
struct fontStruct fontData;
int32_t columns = 80;
bool isDizFile = false;
bool ced = false;
bool transparent = false;
bool workbench = false;
// font selection
alSelectFont(&fontData, font);
// to deal with the bits flag, we declared handy bool types
if (!strcmp(mode, "ced")) {
ced = true;
}
else if (!strcmp(mode, "transparent")) {
transparent = true;
}
else if (!strcmp(mode, "workbench")) {
workbench = true;
}
else if (!strcmp(mode, "workbench-transparent")) {
workbench = true;
transparent = true;
}
// load input file
FILE *input_file = fopen(input, "r");
if (input_file == NULL) {
fputs("\nFile error.\n\n", stderr); exit (1);
}
// get the file size (bytes)
size_t get_file_size = filesize(input);
int32_t input_file_size = (int32_t)get_file_size;
// next up is loading our file into a dynamically allocated memory buffer
unsigned char *input_file_buffer;
int32_t result;
// allocate memory to contain the whole file
input_file_buffer = (unsigned char *) malloc(sizeof(unsigned char)*input_file_size);
if (input_file_buffer == NULL) {
fputs ("\nMemory error.\n\n", stderr); exit (2);
}
// copy the file into the buffer
result = fread(input_file_buffer, 1, input_file_size, input_file);
if (result != input_file_size) {
fputs ("\nReading error.\n\n", stderr); exit (3);
} // whole file is now loaded into input_file_buffer
// close input file, we don't need it anymore
fclose(input_file);
// check if current file has a .diz extension
if (!strcmp(fext, ".diz")) {
isDizFile = true;
}
// libgd image pointers
gdImagePtr im_ANSi;
// ANSi processing loops
int32_t loop = 0, ansi_sequence_loop, seq_graphics_loop;
// character definitions
int32_t current_character, next_character, character;
unsigned char ansi_sequence_character;
// default color values
int32_t color_background = 0, color_foreground = 7;
// text attributes
bool bold = false, underline = false, italics = false, blink = false;
// positions
int32_t position_x = 0, position_y = 0, position_x_max = 0, position_y_max = 0;
int32_t saved_position_y = 0, saved_position_x = 0;
// sequence parsing variables
int32_t seqValue, seqArrayCount, seq_line, seq_column;
char *seqGrab;
char **seqArray;
// ANSi buffer structure array definition
int32_t structIndex = 0;
struct ansiChar *ansi_buffer, *temp;
// ANSi buffer dynamic memory allocation
ansi_buffer = malloc(sizeof(struct ansiChar));
// background canvas
int32_t background_canvas = 0;
// ANSi interpreter
while (loop < input_file_size)
{
current_character = input_file_buffer[loop];
next_character = input_file_buffer[loop + 1];
if (position_x==80 && !strcmp(WRAP_COLUMN_80, "1"))
{
position_y++;
position_x=0;
}
// CR + LF
if (current_character == 13 && next_character == 10) {
position_y++;
position_x = 0;
loop++;
}
// LF
if (current_character == 10)
{
position_y++;
position_x = 0;
}
// tab
if (current_character == 9)
{
position_x += 8;
}
// sub
if (current_character == 26 && !strcmp(SUBSTITUTE_BREAK, "1"))
{
break;
}
// ANSi sequence
if (current_character == 27 && next_character == 91)
{
for (ansi_sequence_loop = 0; ansi_sequence_loop < 12; ansi_sequence_loop++)
{
ansi_sequence_character = input_file_buffer[loop + 2 + ansi_sequence_loop];
// cursor position
if (ansi_sequence_character == 'H' || ansi_sequence_character == 'f')
{
// create substring from the sequence's content
seqGrab = substr((char *)input_file_buffer, loop+2, ansi_sequence_loop);
// create sequence content array
seqArrayCount = explode(&seqArray, ';', seqGrab);
if (seqArrayCount > 1) {
// convert grabbed sequence content to integers
seq_line = atoi(seqArray[0]);
seq_column = atoi(seqArray[1]);
// finally set the positions
position_y = seq_line-1;
position_x = seq_column-1;
}
else {
// no coordinates specified? we move to the home position
position_y = 0;
position_x = 0;
}
loop+=ansi_sequence_loop+2;
break;
}
// cursor up
if (ansi_sequence_character=='A')
{
// create substring from the sequence's content
seqGrab = substr((char *)input_file_buffer, loop+2, ansi_sequence_loop);
// now get escape sequence's position value
int32_t seq_line = atoi(seqGrab);
if (seq_line == 0) {
seq_line = 1;
}
position_y = position_y - seq_line;
loop+=ansi_sequence_loop+2;
break;
}
// cursor down
if (ansi_sequence_character=='B')
{
// create substring from the sequence's content
seqGrab = substr((char *)input_file_buffer, loop+2, ansi_sequence_loop);
// now get escape sequence's position value
int32_t seq_line = atoi(seqGrab);
if (seq_line == 0) {
seq_line = 1;
}
position_y = position_y + seq_line;
loop+=ansi_sequence_loop+2;
break;
}
// cursor forward
if (ansi_sequence_character=='C')
{
// create substring from the sequence's content
seqGrab = substr((char *)input_file_buffer, loop+2, ansi_sequence_loop);
// now get escape sequence's position value
int32_t seq_column = atoi(seqGrab);
if (seq_column == 0) {
seq_column = 1;
}
position_x = position_x + seq_column;
if (position_x>80)
{
position_x=80;
}
loop+=ansi_sequence_loop+2;
break;
}
// cursor backward
if (ansi_sequence_character=='D')
{
// create substring from the sequence's content
seqGrab = substr((char *)input_file_buffer, loop+2, ansi_sequence_loop);
// now get escape sequence's content length
int32_t seq_column = atoi(seqGrab);
if (seq_column == 0) {
seq_column = 1;
}
position_x = position_x - seq_column;
if (position_x < 0)
{
position_x = 0;
}
loop+=ansi_sequence_loop+2;
break;
}
// save cursor position
if (ansi_sequence_character=='s')
{
saved_position_y = position_y;
saved_position_x = position_x;
loop+=ansi_sequence_loop+2;
break;
}
// restore cursor position
if (ansi_sequence_character=='u')
{
position_y = saved_position_y;
position_x = saved_position_x;
loop+=ansi_sequence_loop+2;
break;
}
// erase display
if (ansi_sequence_character=='J')
{
// create substring from the sequence's content
seqGrab = substr((char *)input_file_buffer, loop+2, ansi_sequence_loop);
// convert grab to an integer
int32_t eraseDisplayInt = atoi(seqGrab);
if (eraseDisplayInt == 2)
{
position_x=0;
position_y=0;
position_x_max=0;
position_y_max=0;
// reset ansi buffer
free(ansi_buffer);
ansi_buffer = malloc(sizeof(struct ansiChar));
structIndex=0;
}
loop+=ansi_sequence_loop+2;
break;
}
// set graphics mode
if (ansi_sequence_character=='m')
{
// create substring from the sequence's content
seqGrab = substr((char *)input_file_buffer, loop+2, ansi_sequence_loop);
// create sequence content array
seqArrayCount = explode(&seqArray, ';', seqGrab);
// a loophole in limbo
for (seq_graphics_loop = 0; seq_graphics_loop < seqArrayCount; seq_graphics_loop++)
{
// convert split content value to integer
seqValue = atoi(seqArray[seq_graphics_loop]);
if (seqValue == 0)
{
color_background = 0;
color_foreground = 7;
bold = false;
underline = false;
italics = false;
blink = false;
}
if (seqValue == 1)
{
if (!workbench)
{
color_foreground+=8;
}
bold = true;
}
if (seqValue == 3)
{
italics = true;
}
if (seqValue == 4)
{
underline = true;
}
if (seqValue == 5)
{
if (!workbench)
{
color_background+=8;
}
blink = true;
}
if (seqValue > 29 && seqValue < 38)
{
color_foreground = seqValue - 30;
if (bold)
{
color_foreground+=8;
}
}
if (seqValue > 39 && seqValue < 48)
{
color_background = seqValue - 40;
if (blink && icecolors)
{
color_background+=8;
}
}
}
loop+=ansi_sequence_loop+2;
break;
}
// cursor (de)activation (Amiga ANSi)
if (ansi_sequence_character == 'p')
{
loop+=ansi_sequence_loop+2;
break;
}
// skipping set mode and reset mode sequences
if (ansi_sequence_character == 'h' || ansi_sequence_character == 'l')
{
loop+=ansi_sequence_loop+2;
break;
}
}
}
else if (current_character!=10 && current_character!=13 && current_character!=9)
{
// record number of columns and lines used
if (position_x>position_x_max)
{
position_x_max=position_x;
}
if (position_y>position_y_max)
{
position_y_max=position_y;
}
// write current character in ansiChar structure
if (!fontData.isAmigaFont || (current_character != 12 && current_character != 13))
{
// reallocate structure array memory
temp = realloc(ansi_buffer, (structIndex + 1) * sizeof(struct ansiChar));
ansi_buffer = temp;
ansi_buffer[structIndex].color_background = color_background;
ansi_buffer[structIndex].color_foreground = color_foreground;
ansi_buffer[structIndex].current_character = current_character;
ansi_buffer[structIndex].bold = bold;
ansi_buffer[structIndex].italics = italics;
ansi_buffer[structIndex].underline = underline;
ansi_buffer[structIndex].position_x = position_x;
ansi_buffer[structIndex].position_y = position_y;
structIndex++;
position_x++;
}
}
loop++;
}
// allocate image buffer memory
position_x_max++;
position_y_max++;
if (ced)
{
columns = 78;
}
if (isDizFile) {
columns = fmin(position_x_max,80);
}
// create that damn thingy
im_ANSi = gdImageCreate(columns * int_bits,(position_y_max)*fontData.font_size_y);
if (!im_ANSi) {
fputs ("\nCan't allocate ANSi buffer image memory.\n\n", stderr); exit (6);
}
int32_t colors[21];
if (ced)
{
colors[0]=gdImageColorAllocate(im_ANSi, 170, 170, 170);
for (loop=1; loop<16; loop++)
{
colors[loop]=gdImageColorAllocate(im_ANSi, 0, 0, 0);
}
}
else if (workbench)
{
gdImageFill(im_ANSi, 0, 0, 0);
colors[0] = gdImageColorAllocate(im_ANSi, 170, 170, 170);
colors[1] = gdImageColorAllocate(im_ANSi, 0, 0, 255);
colors[2] = gdImageColorAllocate(im_ANSi, 255, 255, 255);
colors[3] = gdImageColorAllocate(im_ANSi, 0, 255, 255);
colors[4] = gdImageColorAllocate(im_ANSi, 0, 0, 0);
colors[5] = gdImageColorAllocate(im_ANSi, 255, 0, 255);
colors[6] = gdImageColorAllocate(im_ANSi, 102, 136, 187);
colors[7] = gdImageColorAllocate(im_ANSi, 255, 255, 255);
colors[8] = gdImageColorAllocate(im_ANSi, 170, 170, 170);
colors[9] = gdImageColorAllocate(im_ANSi, 0, 0, 255);
colors[10] = gdImageColorAllocate(im_ANSi, 255, 255, 255);
colors[11] = gdImageColorAllocate(im_ANSi, 0, 255, 255);
colors[12] = gdImageColorAllocate(im_ANSi, 0, 0, 0);
colors[13] = gdImageColorAllocate(im_ANSi, 255, 0, 255);
colors[14] = gdImageColorAllocate(im_ANSi, 102, 136, 187);
colors[15] = gdImageColorAllocate(im_ANSi, 255, 255, 255);
}
else
{
// Allocate standard ANSi color palette
colors[0] = gdImageColorAllocate(im_ANSi, 0, 0, 0);
colors[1] = gdImageColorAllocate(im_ANSi, 170, 0, 0);
colors[2] = gdImageColorAllocate(im_ANSi, 0, 170, 0);
colors[3] = gdImageColorAllocate(im_ANSi, 170, 85, 0);
colors[4] = gdImageColorAllocate(im_ANSi, 0, 0, 170);
colors[5] = gdImageColorAllocate(im_ANSi, 170, 0, 170);
colors[6] = gdImageColorAllocate(im_ANSi, 0, 170, 170);
colors[7] = gdImageColorAllocate(im_ANSi, 170, 170, 170);
colors[8] = gdImageColorAllocate(im_ANSi, 85, 85, 85);
colors[9] = gdImageColorAllocate(im_ANSi, 255, 85, 85);
colors[10] = gdImageColorAllocate(im_ANSi, 85, 255, 85);
colors[11] = gdImageColorAllocate(im_ANSi, 255, 255, 85);
colors[12] = gdImageColorAllocate(im_ANSi, 85, 85, 255);
colors[13] = gdImageColorAllocate(im_ANSi, 255, 85, 255);
colors[14] = gdImageColorAllocate(im_ANSi, 85, 255, 255);
colors[15] = gdImageColorAllocate(im_ANSi, 255, 255, 255);
colors[20] = gdImageColorAllocate(im_ANSi, 200, 220, 169);
background_canvas = gdImageColorAllocate(im_ANSi, 0, 0, 0);
}
// even more definitions, sigh
int32_t ansiBufferItems = structIndex;
// render ANSi
for (loop = 0; loop < ansiBufferItems; loop++)
{
// grab ANSi char from our structure array
color_background = ansi_buffer[loop].color_background;
color_foreground = ansi_buffer[loop].color_foreground;
character = ansi_buffer[loop].current_character;
bold = ansi_buffer[loop].bold;
italics = ansi_buffer[loop].italics;
underline = ansi_buffer[loop].underline;
position_x = ansi_buffer[loop].position_x;
position_y = ansi_buffer[loop].position_y;
alDrawChar(im_ANSi, fontData.font_data, int_bits, fontData.font_size_y,
position_x, position_y, colors[color_background], colors[color_foreground], character);
}
// transparent flag used?
if (transparent)
{
gdImageColorTransparent(im_ANSi, background_canvas);
}
// create output image
FILE *file_Out = fopen(output, "wb");
gdImagePng(im_ANSi, file_Out);
fclose(file_Out);
// in case Retina image output is wanted
if (createRetinaRep)
{
gdImagePtr im_RetinaANSi;
// make the Retina image @2x as large as im_ANSi
im_RetinaANSi = gdImageCreate(im_ANSi->sx * 2, im_ANSi->sy * 2);
gdImageCopyResized(im_RetinaANSi, im_ANSi, 0, 0, 0, 0,
im_RetinaANSi->sx, im_RetinaANSi->sy,
im_ANSi->sx, im_ANSi->sy);
// create retina output image
FILE *file_RetinaOut = fopen(retinaout, "wb");
gdImagePng(im_RetinaANSi, file_RetinaOut);
fclose(file_RetinaOut);
gdImageDestroy(im_RetinaANSi);
}
// free memory
free(ansi_buffer);
gdImageDestroy(im_ANSi);
}
// PCB
void alPcBoardLoader(char *input, char *output, char *retinaout, char *font, int32_t int_bits, bool createRetinaRep)
{
// some type declarations
struct fontStruct fontData;
int32_t columns = 80;
int32_t loop, structIndex;
// font selection
alSelectFont(&fontData, font);
// load input file
FILE *input_file = fopen(input, "r");
if (input_file == NULL) {
fputs("\nFile error.\n\n", stderr); exit (1);
}
// get the file size (bytes)
size_t get_file_size = filesize(input);
int32_t input_file_size = (int32_t)get_file_size;
// next up is loading our file into a dynamically allocated memory buffer
unsigned char *input_file_buffer;
int32_t result;
// allocate memory to contain the whole file
input_file_buffer = (unsigned char *) malloc(sizeof(unsigned char)*input_file_size);
if (input_file_buffer == NULL) {
fputs ("\nMemory error.\n\n", stderr); exit (2);
}
// copy the file into the buffer
result = fread(input_file_buffer, 1, input_file_size, input_file);
if (result != input_file_size) {
fputs ("\nReading error.\n\n", stderr); exit (3);
} // whole file is now loaded into input_file_buffer
// close input file, we don't need it anymore
fclose(input_file);
// libgd image pointers
gdImagePtr im_PCB;
// process PCBoard
int32_t character, current_character, next_character;
int32_t color_background = 0, color_foreground = 7;
int32_t position_x = 0, position_y = 0, position_x_max = 0, position_y_max = 0;
// PCB buffer structure array definition
struct pcbChar *pcboard_buffer, *temp;
// PCB buffer dynamic memory allocation
pcboard_buffer = malloc(sizeof(struct pcbChar));
// reset loop
loop = 0;
structIndex = 0;
while (loop < input_file_size)
{
current_character = input_file_buffer[loop];
next_character = input_file_buffer[loop+1];
if (position_x == 80)
{
position_y++;
position_x = 0;
}
// CR + LF
if (current_character == 13 && next_character == 10) {
position_y++;
position_x = 0;
loop++;
}
// LF
if (current_character == 10)
{
position_y++;
position_x = 0;
}
// Tab
if (current_character==9)
{
position_x+=8;
}
// Sub
if (current_character == 26)
{
break;
}
// PCB sequence
if (current_character == 64 && next_character == 88)
{
// set graphics rendition
color_background = input_file_buffer[loop+2];
color_foreground = input_file_buffer[loop+3];
loop+=3;
}
else if (current_character == 64 && next_character == 67 &&
input_file_buffer[loop+2] == 'L' && input_file_buffer[loop+3] == 'S')
{
// erase display
position_x = 0;
position_y = 0;
position_x_max = 0;
position_y_max = 0;
loop+=4;
}
else if (current_character == 64 && next_character == 80 && input_file_buffer[loop+2] == 'O'
&& input_file_buffer[loop+3] == 'S' && input_file_buffer[loop+4]== ':')
{
// cursor position
if (input_file_buffer[loop+6]=='@')
{
position_x=((input_file_buffer[loop+5])-48)-1;
loop+=5;
}
else
{
position_x = (10 * ((input_file_buffer[loop+5])-48) + (input_file_buffer[loop+6])-48)-1;
loop+=6;
}
}
else if (current_character != 10 && current_character != 13 && current_character != 9)
{
// record number of columns and lines used
if (position_x > position_x_max)
{
position_x_max = position_x;
}
if (position_y > position_y_max)
{
position_y_max = position_y;
}
// reallocate structure array memory
temp = realloc(pcboard_buffer, (structIndex + 1) * sizeof(struct pcbChar));
pcboard_buffer = temp;
// write current character in pcbChar structure
pcboard_buffer[structIndex].position_x = position_x;
pcboard_buffer[structIndex].position_y = position_y;
pcboard_buffer[structIndex].color_background = color_background;
pcboard_buffer[structIndex].color_foreground = color_foreground;
pcboard_buffer[structIndex].current_character = current_character;
position_x++;
structIndex++;
}
loop++;
}
position_x_max++;
position_y_max++;
// allocate buffer image memory
im_PCB = gdImageCreate(columns * int_bits, (position_y_max)*fontData.font_size_y);
// allocate black color and create background canvas
gdImageColorAllocate(im_PCB, 0, 0, 0);
gdImageFill(im_PCB, 0, 0, 0);
// allocate color palette
int32_t colors[71];
colors[48] = gdImageColorAllocate(im_PCB, 0, 0, 0);
colors[49] = gdImageColorAllocate(im_PCB, 0, 0, 170);
colors[50] = gdImageColorAllocate(im_PCB, 0, 170, 0);
colors[51] = gdImageColorAllocate(im_PCB, 0, 170, 170);
colors[52] = gdImageColorAllocate(im_PCB, 170, 0, 0);
colors[53] = gdImageColorAllocate(im_PCB, 170, 0, 170);
colors[54] = gdImageColorAllocate(im_PCB, 170, 85, 0);
colors[55] = gdImageColorAllocate(im_PCB, 170, 170, 170);
colors[56] = gdImageColorAllocate(im_PCB, 85, 85, 85);
colors[57] = gdImageColorAllocate(im_PCB, 85, 85, 255);
colors[65] = gdImageColorAllocate(im_PCB, 85, 255, 85);
colors[66] = gdImageColorAllocate(im_PCB, 85, 255, 255);
colors[67] = gdImageColorAllocate(im_PCB, 255, 85, 85);
colors[68] = gdImageColorAllocate(im_PCB, 255, 85, 255);
colors[69] = gdImageColorAllocate(im_PCB, 255, 255, 85);
colors[70] = gdImageColorAllocate(im_PCB, 255, 255, 255);
// the last value of loop tells us how many items are stored in there
int32_t pcbBufferItems = structIndex;
// render PCB
for (loop = 0; loop < pcbBufferItems; loop++)
{
// grab our chars out of the structure
position_x = pcboard_buffer[loop].position_x;
position_y = pcboard_buffer[loop].position_y;
color_background = pcboard_buffer[loop].color_background;
color_foreground = pcboard_buffer[loop].color_foreground;
character = pcboard_buffer[loop].current_character;
alDrawChar(im_PCB, fontData.font_data, int_bits, fontData.font_size_y,
position_x, position_y, colors[color_background], colors[color_foreground], character);
}
// create output image
FILE *file_Out = fopen(output, "wb");
gdImagePng(im_PCB, file_Out);
fclose(file_Out);
// in case Retina image output is wanted
if (createRetinaRep)
{
gdImagePtr im_RetinaANSi;
// make the Retina image @2x as large as im_PCB
im_RetinaANSi = gdImageCreate(im_PCB->sx * 2, im_PCB->sy * 2);
gdImageCopyResized(im_RetinaANSi, im_PCB, 0, 0, 0, 0,
im_RetinaANSi->sx, im_RetinaANSi->sy,
im_PCB->sx, im_PCB->sy);
// create retina output image
FILE *file_RetinaOut = fopen(retinaout, "wb");
gdImagePng(im_RetinaANSi, file_RetinaOut);
fclose(file_RetinaOut);
gdImageDestroy(im_RetinaANSi);
}
// free memory
gdImageDestroy(im_PCB);
}
// TUNDRA
void alTundraLoader(char *input, char *output, char *retinaout, char *font, int32_t int_bits, bool fileHasSAUCE, bool createRetinaRep)
{
// some type declarations
struct fontStruct fontData;
int32_t columns = 80;
char tundra_version;
char tundra_header[8];
// font selection
alSelectFont(&fontData, font);
// load input file
FILE *input_file = fopen(input, "r");
if (input_file == NULL) {
fputs("\nFile error.\n\n", stderr); exit (1);
}
// get the file size (bytes)
size_t get_file_size = filesize(input);
int32_t input_file_size = (int32_t)get_file_size;
// next up is loading our file into a dynamically allocated memory buffer
unsigned char *input_file_buffer;
int32_t result;
// allocate memory to contain the whole file
input_file_buffer = (unsigned char *) malloc(sizeof(unsigned char)*input_file_size);
if (input_file_buffer == NULL) {
fputs ("\nMemory error.\n\n", stderr); exit (2);
}
// copy the file into the buffer
result = fread(input_file_buffer, 1, input_file_size, input_file);
if (result != input_file_size) {
fputs ("\nReading error.\n\n", stderr); exit (3);
} // whole file is now loaded into input_file_buffer
// exclude SAUCE record from file buffer
if(fileHasSAUCE) {
sauce *saucerec = sauceReadFile(input_file);
input_file_size -= 129 - ( saucerec->comments > 0 ? 5 + 64 * saucerec->comments : 0);
}
// close input file, we don't need it anymore
fclose(input_file);
// libgd image pointers
gdImagePtr im_Tundra;
// extract tundra header
tundra_version = input_file_buffer[0];
memcpy(&tundra_header,input_file_buffer+1,8);
// need to add check for "TUNDRA24" string in the header
if (tundra_version != 24)
{
fputs ("\nInput file is not a TUNDRA file.\n\n", stderr); exit (4);
}
// read tundra file a first time to find the image size
int32_t character, color_background = 0, color_foreground = 0;
int32_t loop = 0, position_x = 0, position_y = 0;
loop=9;
while (loop < input_file_size)
{
if (position_x == 80)
{
position_x = 0;
position_y++;
}
character = input_file_buffer[loop];
if (character == 1)
{
position_y =
(input_file_buffer[loop + 1] << 24) + (input_file_buffer[loop + 2] << 16) +
(input_file_buffer[loop + 3] << 8) + input_file_buffer[loop+4];
position_x =
(input_file_buffer[loop + 5] << 24) + (input_file_buffer[loop + 6] << 16) +
(input_file_buffer[loop + 7] << 8) + input_file_buffer[loop+8];
loop+=8;
}
if (character == 2)
{
character = input_file_buffer[loop + 1];
loop+=5;
}
if (character == 4)
{
character = input_file_buffer[loop + 1];
loop+=5;
}
if (character == 6)
{
character = input_file_buffer[loop + 1];
loop+=9;
}
if (character !=1 && character !=2 && character !=4 && character != 6)
{
position_x++;
}
loop++;
}
position_y++;
// allocate buffer image memory
im_Tundra = gdImageCreateTrueColor(columns * int_bits , (position_y) * fontData.font_size_y);
if (!im_Tundra) {
fputs ("\nError, can't allocate buffer image memory.\n\n", stderr); exit (6);
}
// process tundra
position_x = 0;
position_y = 0;
loop = 9;
while (loop < input_file_size)
{
if (position_x == 80)
{
position_x = 0;
position_y++;
}
character = input_file_buffer[loop];
if (character == 1)
{
position_y =
(input_file_buffer[loop + 1] << 24) + (input_file_buffer[loop + 2] << 16) +
(input_file_buffer[loop + 3] << 8) + input_file_buffer[loop + 4];
position_x =
(input_file_buffer[loop + 5] << 24) + (input_file_buffer[loop + 6] << 16) +
(input_file_buffer[loop + 7] << 8) + input_file_buffer[loop + 8];
loop+=8;
}
if (character == 2)
{
color_foreground =