rpuzonas/raylib-example-indexer
1
0
Fork 0
Code

make json output smaller

Browse Source
This commit is contained in:
Rokas Puzonas 2023-08-26 14:45:05 +03:00
parent 1ff7adac56
commit 7664c7d2c3
4 changed files with 769 additions and 283 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
.gitignore vendored
View File

@ -1 +1 @@
output
build

28
Makefile
View File

@ -1,22 +1,20 @@
.DEFAULT_GOAL := run
BUILD_DIR := build
.DEFAULT_GOAL := all
.PHONY := raylib_example_indexer all clean
raylib_example_indexer: src/main.c
mkdir -p output
gcc src/main.c -o output/raylib_example_indexer -I./external -DSTB_C_LEXER_IMPLEMENTATION
example_indexer: src/main.c
mkdir -p $(BUILD_DIR)
gcc src/main.c -o $(BUILD_DIR)/example_indexer -I./external -DSTB_C_LEXER_IMPLEMENTATION
raylib_api:
mkdir -p output
curl https://raw.githubusercontent.com/raysan5/raylib/master/parser/output/raylib_api.txt -o output/raylib_api.txt
$(BUILD_DIR)/raylib:
mkdir -p $(BUILD_DIR)
git clone git@github.com:raysan5/raylib.git $(BUILD_DIR)/raylib
raylib:
mkdir -p output
git clone git@github.com:raysan5/raylib.git output/raylib
run: example_indexer
./$(BUILD_DIR)/example_indexer $(BUILD_DIR)/raylib/src $(BUILD_DIR)/raylib/examples $(BUILD_DIR)/output.json
run: raylib_example_indexer
./output/raylib_example_indexer output/raylib_api.txt output/raylib/examples output/output.json
all: raylib_api raylib run
all: $(BUILD_DIR)/raylib example_indexer run
clean:
rm -rf output
rm -rf $(BUILD_DIR)

442
src/main.c
View File

@ -9,34 +9,33 @@
#include "stb_c_lexer.h"
#include "raylib_parser.c"
#define MAX_FUNCS_TO_PARSE 1024 // Maximum number of functions to parse
#define MAX_FUNC_USAGES 1024 // Maximum number of usages per function
#define MAX_FUNCS_PER_EXAMPLE 1024 // Maximum number of usages per function per file
typedef struct function_info {
char name[64];
int name_size;
int param_count;
} function_info;
typedef struct {
char filename[256];
// TODO: Track where function usage was found and display it?
} FunctionUsage;
typedef struct function_usage {
char filename[PATH_MAX];
int line_number;
int line_offset;
} function_usage;
typedef struct line_range {
typedef struct {
int from, to; // [from, to) - from inclusive, to exclusive
} line_range;
} LineRange;
static int get_file_size(FILE *file) {
fseek(file, 0, SEEK_END);
int size = ftell(file);
fseek(file, 0, SEEK_SET);
return size;
static bool StartsWith(char *text, int textSize, char *prefix, int prefixSize)
{
return textSize >= prefixSize && !strncmp(text, prefix, prefixSize);
}
static bool get_next_line(line_range *line, char *text, int text_size, int from) {
for (int i = from; i < text_size; i++) {
static bool EndsSith(char *text, int textSize, char *suffix, int suffixSize)
{
return textSize >= suffixSize && !strncmp(text+textSize-suffixSize, suffix, suffixSize);
}
static bool GetNextLine(LineRange *line, char *text, int textSize, int from)
{
for (int i = from; i < textSize; i++) {
if (text[i] == '\n') {
line->from = from;
line->to = i;
@ -46,139 +45,60 @@ static bool get_next_line(line_range *line, char *text, int text_size, int from)
return false;
}
static int skip_next_lines(char *text, int text_size, int line_count, int from) {
int next_line_from = from;
line_range curr = { 0 };
static int GetFunctionFromIdentifier(char *id, FunctionInfo *functions, int functionCount)
{
int idSize = strlen(id);
for (int i = 0; i < line_count; i++) {
if (!get_next_line(&curr, text, text_size, next_line_from)) break;
next_line_from = curr.to+1;
}
return next_line_from;
}
static int find_start_of_function_block(char *raylib_api, int raylib_api_size) {
int next_line_from = 0;
line_range curr = { 0 };
while (get_next_line(&curr, raylib_api, raylib_api_size, next_line_from)) {
int line_size = curr.to - curr.from;
char *line = &raylib_api[curr.from];
if (line_size >= sizeof("Functions found:") && !strncmp(line, "Functions found:", sizeof("Functions found:")-1)) {
line_range next_line;
if (get_next_line(&next_line, raylib_api, raylib_api_size, curr.to+1)) {
return next_line.to+1;
} else {
return -1;
}
}
next_line_from = curr.to+1;
}
return -1;
}
static bool parse_function_info(char *line, int line_size, function_info *info) {
char *name = strchr(line, ':') + 2;
int name_size = strchr(line, '(') - name;
strncpy(info->name, name, name_size);
info->name_size = name_size;
int param_count = strtoul(name + name_size + 4, NULL, 10);
info->param_count = param_count;
return true;
}
static int parse_funcs_from_raylib_api(char *raylib_api, int raylib_api_size, function_info *funcs, int max_funcs) {
int start_of_functions = find_start_of_function_block(raylib_api, raylib_api_size);
if (start_of_functions == -1) {
return -1;
}
int count = 0;
int next_line_from = start_of_functions;
line_range curr = { 0 };
while (get_next_line(&curr, raylib_api, raylib_api_size, next_line_from)) {
int line_size = curr.to - curr.from;
char *line = &raylib_api[curr.from];
function_info *func_info = &funcs[count];
if (!parse_function_info(line, line_size, func_info)) {
fprintf(stderr, "Failed to parse function line: %.*s\n", line_size, line);
return -1;
}
count++;
int skip_count = 3 + MAX(func_info->param_count, 1);
next_line_from = skip_next_lines(raylib_api, raylib_api_size, skip_count, curr.to+1);
if (max_funcs == count) break;
}
return count;
}
static int get_func_from_identifier(char *id, function_info *funcs, int func_count) {
int id_size = strlen(id);
for (int i = 0; i < func_count; i++) {
function_info *func = &funcs[i];
if (id_size != func->name_size) continue;
if (!strncmp(id, func->name, func->name_size)) {
for (int i = 0; i < functionCount; i++) {
FunctionInfo *function = &functions[i];
if (idSize > sizeof(function->name)) continue;
if (!strcmp(id, function->name)) {
return i;
}
}
return -1;
}
static bool collect_function_usages_from_file(char *directory, char *file_path, function_usage *usages[], int *usage_counts, function_info *funcs, int func_count) {
char full_path[PATH_MAX] = { 0 };
snprintf(full_path, sizeof(full_path), "%s/%s", directory, file_path);
FILE *file = fopen(full_path, "r");
if (file == NULL) {
fprintf(stderr, "Failed to open file '%s'\n", full_path);
static bool ParseFunctionUsagesFromFile(char *directory, char *filePath, FunctionUsage *usages[], int *usageCounts, FunctionInfo *functions, int functionCount)
{
char fullPath[PATH_MAX] = { 0 };
snprintf(fullPath, sizeof(fullPath), "%s/%s", directory, filePath);
int fileSize = 0;
char *exampleCode = LoadFileText(fullPath, &fileSize);
if (exampleCode == NULL) {
return false;
}
int file_size = get_file_size(file);
char *example_code = malloc(file_size);
fread(example_code, sizeof(char), file_size, file);
stb_lexer lexer;
char string_store[512];
stb_c_lexer_init(&lexer, example_code, example_code+file_size, string_store, sizeof(string_store));
char stringStore[512];
stb_c_lexer_init(&lexer, exampleCode, exampleCode+fileSize, stringStore, sizeof(stringStore));
while (stb_c_lexer_get_token(&lexer)) {
if (lexer.token != CLEX_id) continue;
int func_idx = get_func_from_identifier(lexer.string, funcs, func_count);
if (func_idx != -1) {
stb_lex_location loc;
stb_c_lexer_get_location(&lexer, lexer.where_firstchar, &loc);
int *usage_count = &usage_counts[func_idx];
assert(*usage_count < MAX_FUNC_USAGES);
function_usage *usage = &usages[func_idx][*usage_count];
usage->line_number = loc.line_number;
usage->line_offset = loc.line_offset;
strncpy(usage->filename, file_path, strlen(file_path));
(*usage_count)++;
int functionIndex = GetFunctionFromIdentifier(lexer.string, functions, functionCount);
if (functionIndex != -1) {
int *usageCount = &usageCounts[functionIndex];
assert(*usageCount < MAX_FUNCS_PER_EXAMPLE);
FunctionUsage *usage = &usages[functionIndex][*usageCount];
strncpy(usage->filename, filePath, strlen(filePath));
(*usageCount)++;
}
}
free(example_code);
fclose(file);
free(exampleCode);
return true;
}
static void collect_function_usages_from_folder(char *cwd, char *dir, function_usage *usages[], int *usage_counts, function_info *funcs, int func_count) {
char dir_path[PATH_MAX];
snprintf(dir_path, sizeof(dir_path), "%s/%s", cwd, dir);
DIR *dirp = opendir(dir_path);
static void ParseFunctionsUsagesFromFolder(char *cwd, char *dir, FunctionUsage *usages[], int *usageCounts, FunctionInfo *functions, int functionCount)
{
char dirPath[PATH_MAX];
snprintf(dirPath, sizeof(dirPath), "%s/%s", cwd, dir);
DIR *dirp = opendir(dirPath);
if (dirp == NULL) {
fprintf(stderr, "Failed to open directory '%s'\n", dir_path);
fprintf(stderr, "Failed to open directory '%s'\n", dirPath);
return;
}
@ -188,60 +108,180 @@ static void collect_function_usages_from_folder(char *cwd, char *dir, function_u
char *extension = strrchr(entry->d_name, '.');
if (!strcmp(extension, ".c")) {
char file_path[PATH_MAX];
snprintf(file_path, sizeof(file_path), "%s/%s", dir, entry->d_name);
collect_function_usages_from_file(cwd, file_path, usages, usage_counts, funcs, func_count);
char filePath[PATH_MAX];
snprintf(filePath, sizeof(filePath), "%s/%s", dir, entry->d_name);
ParseFunctionUsagesFromFile(cwd, filePath, usages, usageCounts, functions, functionCount);
}
}
closedir(dirp);
}
int main(int argc, char **argv) {
if (argc != 4) {
printf("Usage: %s <raylib_api.txt> <examples-dir> <output-file>\n", argv[0]);
return -1;
// Checks if the line is in the format "#if defined(*_IMPLEMENTATION)"
static bool IsLineImplementationIfdef(char *line, int line_size) {
char *prefix = "#if defined(";
char *suffix = "_IMPLEMENTATION)";
return StartsWith(line, line_size, prefix, strlen(prefix)) &&
EndsSith(line, line_size, suffix, strlen(suffix));
}
char *raylib_api_path = argv[1];
char *raylib_examples_path = argv[2];
char *output_path = argv[3];
static int ParseFunctionsDefinitionsFromHeader(char *path, FunctionInfo *functions, int maxFunctions)
{
int fileSize;
char *contents = LoadFileText(path, &fileSize);
char *output_extension = strrchr(output_path, '.');
if (output_extension == NULL) {
fprintf(stderr, "ERROR: Missing extension on output file\n");
return -1;
int count = 0;
int nextLineFrom = 0;
LineRange curr = { 0 };
while (GetNextLine(&curr, contents, fileSize, nextLineFrom)) {
int lineSize = curr.to - curr.from;
char line[512] = { 0 };
strncpy(line, &contents[curr.from], lineSize); // `raylib_parser.c` expects lines to be null-terminated
if (IsLineImplementationIfdef(line, lineSize)) break;
if (IsLineAPIFunction(line, lineSize)) {
ParseAPIFunctionInfo(line, lineSize, &functions[count]);
count++;
if (count == maxFunctions) break;
}
function_info funcs[MAX_FUNCS_TO_PARSE];
int funcs_count = 0;
{ // Collect function definitions
FILE *raylib_api_file = fopen(raylib_api_path, "r");
if (raylib_api_file == NULL) {
fprintf(stderr, "Failed to open file '%s'\n", raylib_api_path);
return -1;
}
int raylib_api_size = get_file_size(raylib_api_file);
char *raylib_api = malloc(raylib_api_size);
fread(raylib_api, sizeof(char), raylib_api_size, raylib_api_file);
fclose(raylib_api_file);
funcs_count = parse_funcs_from_raylib_api(raylib_api, raylib_api_size, funcs, MAX_FUNCS_TO_PARSE);
free(raylib_api);
nextLineFrom = curr.to+1;
}
function_usage *usages[MAX_FUNCS_TO_PARSE] = { 0 };
for (int i = 0; i < funcs_count; i++) {
usages[i] = malloc(MAX_FUNC_USAGES * sizeof(function_usage));
}
int usage_counts[MAX_FUNCS_TO_PARSE] = { 0 };
free(contents);
{ // Collect function usages
DIR *dirp = opendir(raylib_examples_path);
return count;
}
static int ParseFunctionsDefinitionsFromFolder(char *dir, FunctionInfo *functions, int maxFunctions)
{
DIR *dirp = opendir(dir);
if (dirp == NULL) {
fprintf(stderr, "Failed to open directory '%s'\n", raylib_examples_path);
fprintf(stderr, "Failed to open directory '%s'\n", dir);
return -1;
}
int count = 0;
struct dirent *entry;
while ((entry = readdir(dirp)) != NULL) {
if (entry->d_type != DT_REG) continue;
char *fileExtension = strrchr(entry->d_name, '.');
if (fileExtension == NULL) continue;
if (strcmp(fileExtension, ".h")) continue;
char path[256];
snprintf(path, sizeof(path), "%s/%s", dir, entry->d_name);
count += ParseFunctionsDefinitionsFromHeader(path, functions + count, maxFunctions - count);
}
closedir(dirp);
return count;
}
static int GetUniqueFilenames(FunctionUsage *usages, int usageCount, char *uniqueFilenames[])
{
int count = 0;
for (int i = 0; i < usageCount; i++) {
FunctionUsage *usage = &usages[i];
bool found = false;
for (int j = 0; j < count; j++) {
if (!strcmp(uniqueFilenames[j], usage->filename)) {
found = true;
break;
}
}
if (!found) {
uniqueFilenames[count] = strdup(usage->filename);
count++;
}
}
return count;
}
static int OutputFunctionUsagesJSON(char *output, FunctionInfo *functions, int functionCount, FunctionUsage **usages, int *usageCounts)
{
FILE *outputFile = fopen(output, "w");
if (outputFile == NULL) {
fprintf(stderr, "Failed to open file '%s\n'", output);
return -1;
}
fwrite("{", sizeof(char), 1, outputFile);
for (int functionIndex = 0; functionIndex < functionCount; functionIndex++) {
FunctionInfo *info = &functions[functionIndex];
fwrite("\"", sizeof(char), 1, outputFile);
fwrite(info->name, sizeof(char), strlen(info->name), outputFile);
fwrite("\":[", sizeof(char), 3, outputFile);
int usageCount = usageCounts[functionIndex];
if (usageCount > 0) {
char *uniqueFilenames[usageCount];
int uniqueCount = GetUniqueFilenames(usages[functionIndex], usageCount, uniqueFilenames);
for (int i = 0; i < uniqueCount; i++) {
char *filename = uniqueFilenames[i];
char *example_name = strchr(filename, '/')+1;
int example_name_size = strchr(filename, '.') - example_name;
fwrite("\"", sizeof(char), 1, outputFile);
fwrite(example_name, sizeof(char), example_name_size, outputFile);
fwrite("\"", sizeof(char), 1, outputFile);
if (i < uniqueCount-1) {
fwrite(",", sizeof(char), 1, outputFile);
}
}
for (int i = 0; i < uniqueCount; i++) {
free(uniqueFilenames[i]);
}
}
fwrite("]", sizeof(char), 1, outputFile);
if (functionIndex < functionCount-1) {
fwrite(",", sizeof(char), 1, outputFile);
}
}
fwrite("}", sizeof(char), 1, outputFile);
fclose(outputFile);
return 0;
}
int main(int argc, char **argv)
{
if (argc != 4) {
printf("Usage: %s <raylib-src-dir> <examples-dir> <output-file>\n", argv[0]);
return -1;
}
char *raylibSrc = argv[1];
char *raylibExamplesPath = argv[2];
char *outputPath = argv[3];
FunctionInfo functions[MAX_FUNCS_TO_PARSE];
int functionCount = ParseFunctionsDefinitionsFromFolder(raylibSrc, functions, MAX_FUNCS_TO_PARSE);
if (functionCount < 0) {
return -1;
}
FunctionUsage *usages[MAX_FUNCS_TO_PARSE] = { 0 };
for (int i = 0; i < functionCount; i++) {
usages[i] = malloc(MAX_FUNCS_PER_EXAMPLE * sizeof(FunctionUsage));
}
int usageCounts[MAX_FUNCS_TO_PARSE] = { 0 };
{ // Collect function usages from examples
DIR *dirp = opendir(raylibExamplesPath);
if (dirp == NULL) {
fprintf(stderr, "Failed to open directory '%s'\n", raylibExamplesPath);
return -1;
}
struct dirent *entry;
@ -249,69 +289,15 @@ int main(int argc, char **argv) {
if (entry->d_type != DT_DIR) continue;
if (entry->d_name[0] == '.') continue;
collect_function_usages_from_folder(raylib_examples_path, entry->d_name, usages, usage_counts, funcs, funcs_count);
ParseFunctionsUsagesFromFolder(raylibExamplesPath, entry->d_name, usages, usageCounts, functions, functionCount);
}
closedir(dirp);
}
// Output function usages
FILE *output_file = fopen(output_path, "w");
if (output_file == NULL) {
fprintf(stderr, "Failed to open file '%s\n'", output_path);
return -1;
}
OutputFunctionUsagesJSON(outputPath, functions, functionCount, usages, usageCounts);
fwrite("{\n", sizeof(char), 2, output_file);
for (int func_idx = 0; func_idx < funcs_count; func_idx++) {
function_info *info = &funcs[func_idx];
fwrite("\t\"", sizeof(char), 2, output_file);
fwrite(info->name, sizeof(char), info->name_size, output_file);
fwrite("\": [", sizeof(char), 4, output_file);
int usage_count = usage_counts[func_idx];
if (usage_count > 0) {
fwrite("\n", sizeof(char), 1, output_file);
for (int i = 0; i < usage_count; i++) {
function_usage *usage = &usages[func_idx][i];
char *example_name = strchr(usage->filename, '/')+1;
int example_name_size = strchr(usage->filename, '.') - example_name;
char *entry_format = ""
"\t\t{\n"
"\t\t\t\"exampleName\": \"%.*s\",\n"
"\t\t\t\"lineNumber\": %d,\n"
"\t\t\t\"lineOffset\": %d\n"
"\t\t}";
char entry[1024];
int entry_size = snprintf(entry, sizeof(entry), entry_format,
example_name_size,
example_name,
usage->line_number,
usage->line_offset);
fwrite(entry, sizeof(char), entry_size, output_file);
if (i < usage_count-1) {
fwrite(",", sizeof(char), 1, output_file);
}
fwrite("\n", sizeof(char), 1, output_file);
}
fwrite("\t", sizeof(char), 1, output_file);
}
fwrite("]", sizeof(char), 1, output_file);
if (func_idx < funcs_count-1) {
fwrite(",", sizeof(char), 1, output_file);
}
fwrite("\n", sizeof(char), 1, output_file);
}
fwrite("}", sizeof(char), 1, output_file);
fclose(output_file);
for (int i = 0; i < funcs_count; i++) {
for (int i = 0; i < functionCount; i++) {
free(usages[i]);
}

502
src/raylib_parser.c Normal file
View File

@ -0,0 +1,502 @@
/**********************************************************************************************
raylib API parser
This parser scans raylib.h to get API information about defines, structs, aliases, enums, callbacks and functions.
All data is divided into pieces, usually as strings. The following types are used for data:
- struct DefineInfo
- struct StructInfo
- struct AliasInfo
- struct EnumInfo
- struct FunctionInfo
CONSTRAINTS:
This parser is specifically designed to work with raylib.h, so, it has some constraints:
- Functions are expected as a single line with the following structure:
<retType> <name>(<paramType[0]> <paramName[0]>, <paramType[1]> <paramName[1]>); <desc>
Be careful with functions broken into several lines, it breaks the process!
- Structures are expected as several lines with the following form:
<desc>
typedef struct <name> {
<fieldType[0]> <fieldName[0]>; <fieldDesc[0]>
<fieldType[1]> <fieldName[1]>; <fieldDesc[1]>
<fieldType[2]> <fieldName[2]>; <fieldDesc[2]>
} <name>;
- Enums are expected as several lines with the following form:
<desc>
typedef enum {
<valueName[0]> = <valueInteger[0]>, <valueDesc[0]>
<valueName[1]>,
<valueName[2]>, <valueDesc[2]>
<valueName[3]> <valueDesc[3]>
} <name>;
NOTE: Multiple options are supported for enums:
- If value is not provided, (<valueInteger[i -1]> + 1) is assigned
- Value description can be provided or not
OTHER NOTES:
- This parser could work with other C header files if mentioned constraints are followed.
- This parser does not require <string.h> library, all data is parsed directly from char buffers.
- This is a modified/stripped down version of the original parser
Done so to make it usable as a library, and not a CLI tool.
This does not implement a function for every type to parse
LICENSE: zlib/libpng
raylib-parser is licensed under an unmodified zlib/libpng license, which is an OSI-certified,
BSD-like license that allows static linking with closed source software:
Copyright (c) 2021-2023 Ramon Santamaria (@raysan5)
**********************************************************************************************/
#define _CRT_SECURE_NO_WARNINGS
#include <stdlib.h> // Required for: malloc(), calloc(), realloc(), free(), atoi(), strtol()
#include <stdio.h> // Required for: printf(), fopen(), fseek(), ftell(), fread(), fclose()
#include <stdbool.h> // Required for: bool
#include <ctype.h> // Required for: isdigit()
#define MAX_LINE_LENGTH 512 // Maximum length of one line (including comments)
#define MAX_STRUCT_FIELDS 64 // Maximum number of struct fields
#define MAX_ENUM_VALUES 512 // Maximum number of enum values
#define MAX_FUNCTION_PARAMETERS 12 // Maximum number of function parameters
//----------------------------------------------------------------------------------
// Types and Structures Definition
//----------------------------------------------------------------------------------
// Type of parsed define
typedef enum {
UNKNOWN = 0,
MACRO,
GUARD,
INT,
INT_MATH,
LONG,
LONG_MATH,
FLOAT,
FLOAT_MATH,
DOUBLE,
DOUBLE_MATH,
CHAR,
STRING,
COLOR
} DefineType;
// Define info data
typedef struct DefineInfo {
char name[64]; // Define name
int type; // Define type
char value[256]; // Define value
char desc[128]; // Define description
bool isHex; // Define is hex number (for types INT, LONG)
} DefineInfo;
// Struct info data
typedef struct StructInfo {
char name[64]; // Struct name
char desc[128]; // Struct type description
int fieldCount; // Number of fields in the struct
char fieldType[MAX_STRUCT_FIELDS][64]; // Field type
char fieldName[MAX_STRUCT_FIELDS][64]; // Field name
char fieldDesc[MAX_STRUCT_FIELDS][128]; // Field description
} StructInfo;
// Alias info data
typedef struct AliasInfo {
char type[64]; // Alias type
char name[64]; // Alias name
char desc[128]; // Alias description
} AliasInfo;
// Enum info data
typedef struct EnumInfo {
char name[64]; // Enum name
char desc[128]; // Enum description
int valueCount; // Number of values in enumerator
char valueName[MAX_ENUM_VALUES][64]; // Value name definition
int valueInteger[MAX_ENUM_VALUES]; // Value integer
char valueDesc[MAX_ENUM_VALUES][128]; // Value description
} EnumInfo;
// Function info data
typedef struct FunctionInfo {
char name[64]; // Function name
char desc[128]; // Function description (comment at the end)
char retType[32]; // Return value type
int paramCount; // Number of function parameters
char paramType[MAX_FUNCTION_PARAMETERS][32]; // Parameters type
char paramName[MAX_FUNCTION_PARAMETERS][32]; // Parameters name
char paramDesc[MAX_FUNCTION_PARAMETERS][128]; // Parameters description
} FunctionInfo;
//----------------------------------------------------------------------------------
// Global Variables Definition
//----------------------------------------------------------------------------------
#ifndef RAYLIB_API_DEFINE
#define RAYLIB_API_DEFINE "RLAPI"
#endif
//----------------------------------------------------------------------------------
// Module Functions Declaration
//----------------------------------------------------------------------------------
static bool IsLineAPIFunction(char *line, int lineSize);
static void ParseAPIFunctionInfo(char *linePtr, int lineSize, FunctionInfo *functionInfo);
static char *LoadFileText(const char *fileName, int *length);
static char **GetTextLines(const char *buffer, int length, int *linesCount);
static void GetDataTypeAndName(const char *typeName, int typeNameLen, char *type, char *name);
static void GetDescription(const char *source, char *description);
static void MoveArraySize(char *name, char *type); // Move array size from name to type
static unsigned int TextLength(const char *text); // Get text length in bytes, check for \0 character
static bool IsTextEqual(const char *text1, const char *text2, unsigned int count);
static int TextFindIndex(const char *text, const char *find); // Find first text occurrence within a string
static void MemoryCopy(void *dest, const void *src, unsigned int count);
static char *EscapeBackslashes(char *text); // Replace '\' by "\\" when exporting to JSON and XML
static const char *StrDefineType(DefineType type); // Get string of define type
//----------------------------------------------------------------------------------
// Additional functions for use as a library
//----------------------------------------------------------------------------------
static bool IsLineAPIFunction(char *line, int lineSize)
{
int apiDefineSize = TextLength(RAYLIB_API_DEFINE);
// Read function line (starting with `define`, i.e. for raylib.h "RLAPI")
return lineSize >= apiDefineSize && IsTextEqual(line, RAYLIB_API_DEFINE, apiDefineSize);
}
// Assumes that `func_info` is zero initialized
static void ParseAPIFunctionInfo(char *linePtr, int lineSize, FunctionInfo *functionInfo)
{
int funcParamsStart = 0;
int funcEnd = 0;
// Get return type and function name from func line
for (int c = 0; c < lineSize; c++)
{
if (linePtr[c] == '(') // Starts function parameters
{
funcParamsStart = c + 1;
// At this point we have function return type and function name
char funcRetTypeName[128] = { 0 };
int dc = TextLength(RAYLIB_API_DEFINE) + 1;
int funcRetTypeNameLen = c - dc; // Substract `define` ("RLAPI " for raylib.h)
MemoryCopy(funcRetTypeName, &linePtr[dc], funcRetTypeNameLen);
GetDataTypeAndName(funcRetTypeName, funcRetTypeNameLen, functionInfo->retType, functionInfo->name);
break;
}
}
// Get parameters from func line
for (int c = funcParamsStart; c < lineSize; c++)
{
int paramIndex = functionInfo->paramCount;
if (linePtr[c] == ',') // Starts function parameters
{
// Get parameter type + name, extract info
char funcParamTypeName[128] = { 0 };
int funcParamTypeNameLen = c - funcParamsStart;
MemoryCopy(funcParamTypeName, &linePtr[funcParamsStart], funcParamTypeNameLen);
GetDataTypeAndName(funcParamTypeName, funcParamTypeNameLen, functionInfo->paramType[paramIndex], functionInfo->paramName[paramIndex]);
funcParamsStart = c + 1;
if (linePtr[c + 1] == ' ') funcParamsStart += 1;
functionInfo->paramCount++; // Move to next parameter
}
else if (linePtr[c] == ')')
{
funcEnd = c + 2;
// Check if previous word is void
if ((linePtr[c - 4] == 'v') && (linePtr[c - 3] == 'o') && (linePtr[c - 2] == 'i') && (linePtr[c - 1] == 'd')) break;
// Get parameter type + name, extract info
char funcParamTypeName[128] = { 0 };
int funcParamTypeNameLen = c - funcParamsStart;
MemoryCopy(funcParamTypeName, &linePtr[funcParamsStart], funcParamTypeNameLen);
GetDataTypeAndName(funcParamTypeName, funcParamTypeNameLen, functionInfo->paramType[paramIndex], functionInfo->paramName[paramIndex]);
functionInfo->paramCount++; // Move to next parameter
break;
}
}
// Get function description
GetDescription(&linePtr[funcEnd], functionInfo->desc);
// Move array sizes from name to type
for (int j = 0; j < functionInfo->paramCount; j++)
{
MoveArraySize(functionInfo->paramName[j], functionInfo->paramType[j]);
}
}
//----------------------------------------------------------------------------------
// Module Functions Definition
//----------------------------------------------------------------------------------
// Load text data from file, returns a '\0' terminated string
// NOTE: text chars array should be freed manually
static char *LoadFileText(const char *fileName, int *length)
{
char *text = NULL;
if (fileName != NULL)
{
FILE *file = fopen(fileName, "rt");
if (file != NULL)
{
// WARNING: When reading a file as 'text' file,
// text mode causes carriage return-linefeed translation...
// ...but using fseek() should return correct byte-offset
fseek(file, 0, SEEK_END);
int size = ftell(file);
fseek(file, 0, SEEK_SET);
if (size > 0)
{
text = (char *)calloc((size + 1), sizeof(char));
unsigned int count = (unsigned int)fread(text, sizeof(char), size, file);
// WARNING: \r\n is converted to \n on reading, so,
// read bytes count gets reduced by the number of lines
if (count < (unsigned int)size)
{
text = realloc(text, count + 1);
*length = count;
}
else *length = size;
// Zero-terminate the string
text[count] = '\0';
}
fclose(file);
}
}
return text;
}
// Get all lines from a text buffer (expecting lines ending with '\n')
static char **GetTextLines(const char *buffer, int length, int *linesCount)
{
// Get the number of lines in the text
int count = 0;
for (int i = 0; i < length; i++) if (buffer[i] == '\n') count++;
printf("Number of text lines in buffer: %i\n", count);
// Allocate as many pointers as lines
char **lines = (char **)malloc(count*sizeof(char **));
char *bufferPtr = (char *)buffer;
for (int i = 0; (i < count) || (bufferPtr[0] != '\0'); i++)
{
lines[i] = (char *)calloc(MAX_LINE_LENGTH, sizeof(char));
// Remove line leading spaces
// Find last index of space/tab character
int index = 0;
while ((bufferPtr[index] == ' ') || (bufferPtr[index] == '\t')) index++;
int j = 0;
while (bufferPtr[index + j] != '\n')
{
lines[i][j] = bufferPtr[index + j];
j++;
}
bufferPtr += (index + j + 1);
}
*linesCount = count;
return lines;
}
// Get data type and name from a string containing both
// NOTE: Useful to parse function parameters and struct fields
static void GetDataTypeAndName(const char *typeName, int typeNameLen, char *type, char *name)
{
for (int k = typeNameLen; k > 0; k--)
{
if ((typeName[k] == ' ') && (typeName[k - 1] != ','))
{
// Function name starts at this point (and ret type finishes at this point)
MemoryCopy(type, typeName, k);
MemoryCopy(name, typeName + k + 1, typeNameLen - k - 1);
break;
}
else if (typeName[k] == '*')
{
MemoryCopy(type, typeName, k + 1);
MemoryCopy(name, typeName + k + 1, typeNameLen - k - 1);
break;
}
else if ((typeName[k] == '.') && (typeNameLen == 3)) // Handle varargs ...);
{
MemoryCopy(type, "...", 3);
MemoryCopy(name, "args", 4);
break;
}
}
}
// Get comment from a line, do nothing if no comment in line
static void GetDescription(const char *line, char *description)
{
int c = 0;
int descStart = -1;
int lastSlash = -2;
bool isValid = false;
while (line[c] != '\0')
{
if (isValid && (descStart == -1) && (line[c] != ' ')) descStart = c;
else if (line[c] == '/')
{
if (lastSlash == c - 1) isValid = true;
lastSlash = c;
}
c++;
}
if (descStart != -1) MemoryCopy(description, &line[descStart], c - descStart);
}
// Move array size from name to type
static void MoveArraySize(char *name, char *type)
{
int nameLength = TextLength(name);
if (name[nameLength - 1] == ']')
{
for (int k = nameLength; k > 0; k--)
{
if (name[k] == '[')
{
int sizeLength = nameLength - k;
MemoryCopy(&type[TextLength(type)], &name[k], sizeLength);
name[k] = '\0';
}
}
}
}
// Get text length in bytes, check for \0 character
static unsigned int TextLength(const char *text)
{
unsigned int length = 0;
if (text != NULL) while (*text++) length++;
return length;
}
// Compare two text strings, requires number of characters to compare
static bool IsTextEqual(const char *text1, const char *text2, unsigned int count)
{
bool result = true;
for (unsigned int i = 0; i < count; i++)
{
if (text1[i] != text2[i])
{
result = false;
break;
}
}
return result;
}
// Find first text occurrence within a string
int TextFindIndex(const char *text, const char *find)
{
int textLen = TextLength(text);
int findLen = TextLength(find);
for (int i = 0; i <= textLen - findLen; i++)
{
if (IsTextEqual(&text[i], find, findLen)) return i;
}
return -1;
}
// Custom memcpy() to avoid <string.h>
static void MemoryCopy(void *dest, const void *src, unsigned int count)
{
char *srcPtr = (char *)src;
char *destPtr = (char *)dest;
for (unsigned int i = 0; i < count; i++) destPtr[i] = srcPtr[i];
}
// Escape backslashes in a string, writing the escaped string into a static buffer
static char *EscapeBackslashes(char *text)
{
static char buffer[256] = { 0 };
int count = 0;
for (int i = 0; (text[i] != '\0') && (i < 255); i++, count++)
{
buffer[count] = text[i];
if (text[i] == '\\')
{
buffer[count + 1] = '\\';
count++;
}
}
buffer[count] = '\0';
return buffer;
}
// Get string of define type
static const char *StrDefineType(DefineType type)
{
switch (type)
{
case UNKNOWN: return "UNKNOWN";
case GUARD: return "GUARD";
case MACRO: return "MACRO";
case INT: return "INT";
case INT_MATH: return "INT_MATH";
case LONG: return "LONG";
case LONG_MATH: return "LONG_MATH";
case FLOAT: return "FLOAT";
case FLOAT_MATH: return "FLOAT_MATH";
case DOUBLE: return "DOUBLE";
case DOUBLE_MATH: return "DOUBLE_MATH";
case CHAR: return "CHAR";
case STRING: return "STRING";
case COLOR: return "COLOR";
}
return "";
}