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Tiled map importing with metadesk, quad view cull

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main
Cameron Murphy Reikes 2 years ago
parent f5ae9878ef
commit 086dd28512
8 changed files with 871 additions and 32 deletions
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16
assets.mdesk
Unescape Escape View File

@ -1,12 +1,20 @@
@image merchant:
{
filepath = "copyrighted/merchant.png",
filepath: "copyrighted/merchant.png",
}
@image bg_tilesheet:
@image animated_terrain:
{
filepath = "copyrighted/wall-1 - 3 tiles tall.png",
filepath: "copyrighted/animated_terrain.png",
}
@image white_square:
{
filepath = "white square.png",
filepath: "white square.png",
}
@image mystery_tile:
{
filepath: "mystery_tile.png",
}
@level level0:
{
filepath: "testsmalllevel.json",
}

125
assets/level0.json
Unescape Escape View File

@ -0,0 +1,125 @@
{ "compressionlevel":-1,
"height":60,
"infinite":false,
"layers":[
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"height":60,
"id":4,
"name":"Animated Tiles1",
"opacity":1,
"type":"tilelayer",
"visible":true,
"width":60,
"x":0,
"y":0
},
{
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"id":5,
"name":"objects",
"objects":[
{
"class":"",
"height":32,
"id":1,
"name":"spawn",
"rotation":0,
"visible":true,
"width":32,
"x":960,
"y":928
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"opacity":1,
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"nextlayerid":6,
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"orientation":"orthogonal",
"renderorder":"right-down",
"tiledversion":"1.9.2",
"tileheight":32,
"tilesets":[
{
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"source":"..\/EPIC RPG World Pack - Ancient Ruins V 1.7\/EPIC RPG World Pack - Ancient Ruins V 1.7\/TiledMap Editor\/Ancient Ruins-Animated Terrains-16 frames.tsx"
},
{
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{
"firstgid":2469,
"source":"..\/EPIC RPG World Pack - Ancient Ruins V 1.7\/EPIC RPG World Pack - Ancient Ruins V 1.7\/TiledMap Editor\/Ancient Ruins-Tileset-wall-2.tsx"
},
{
"firstgid":2597,
"source":"..\/EPIC RPG World Pack - Ancient Ruins V 1.7\/EPIC RPG World Pack - Ancient Ruins V 1.7\/TiledMap Editor\/Terrain - Ancient Ruins.tsx"
}],
"tilewidth":32,
"type":"map",
"version":"1.9",
"width":60
}

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assets/mystery_tile.png
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39
assets/testsmalllevel.json
Unescape Escape View File

@ -0,0 +1,39 @@
{ "compressionlevel":-1,
"height":8,
"infinite":false,
"layers":[
{
"data":[0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 53, 0, 0, 53, 0, 0,
0, 0, 53, 0, 0, 53, 0, 0,
0, 0, 53, 0, 0, 53, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 53, 0, 0, 0, 0, 0, 0,
0, 53, 53, 53, 53, 53, 53, 0,
0, 0, 0, 0, 0, 0, 0, 0],
"height":8,
"id":1,
"name":"Tile Layer 1",
"opacity":1,
"type":"tilelayer",
"visible":true,
"width":8,
"x":0,
"y":0
}],
"nextlayerid":2,
"nextobjectid":1,
"orientation":"orthogonal",
"renderorder":"right-down",
"tiledversion":"1.9.2",
"tileheight":32,
"tilesets":[
{
"firstgid":1,
"source":"..\/EPIC RPG World Pack - Ancient Ruins V 1.7\/EPIC RPG World Pack - Ancient Ruins V 1.7\/TiledMap Editor\/Ancient Ruins-Animated Terrains-16 frames.tsx"
}],
"tilewidth":32,
"type":"map",
"version":"1.9",
"width":8
}

101
codegen.c
Unescape Escape View File

@ -1,6 +1,7 @@
#include <stdio.h>
#include <stdbool.h>
#define assert(cond, explanation) { if(!cond) { printf("Codegen assertion %s failed: %.*s\n", #cond, MD_S8VArg(explanation)); exit(1); } }
#define assert(cond, explanation) { if(!cond) { printf("Codegen assertion line %d %s failed: %.*s\n", __LINE__, #cond, MD_S8VArg(explanation)); __debugbreak(); exit(1); } }
#pragma warning(disable : 4996) // nonsense about fopen being insecure
@ -11,6 +12,8 @@
#include "md.c"
#pragma warning(pop)
#include "jsmn.h"
MD_String8 OUTPUT_FOLDER = MD_S8LitComp("gen"); // no trailing slash
MD_String8 ASSETS_FOLDER = MD_S8LitComp("assets");
@ -37,8 +40,51 @@ void dump(MD_ParseResult parse) {
}
}
MD_Arena *cg_arena = NULL;
static bool jsoneq(const char *json, jsmntok_t *tok, const char *s) {
if (tok->type == JSMN_STRING && (int)strlen(s) == tok->end - tok->start &&
strncmp(json + tok->start, s, tok->end - tok->start) == 0) {
return true;
}
return false;
}
static int getint(const char *json, jsmntok_t *tok) {
assert(tok->type == JSMN_PRIMITIVE, MD_S8Lit("not primitive"));
char tmp[256] = {0};
strncpy(tmp, json + tok->start, tok->end - tok->start);
return atoi(tmp);
}
// will look over into random memory if can't find...
static int getnextofname(const char *json, jsmntok_t *starting_at, const char *name) {
jsmntok_t *cur = starting_at;
// max lookahead, bad
for(int i = 0; i < 1024*10; i++) {
if(jsoneq(json, cur, name)) {
return getint(json, cur+1);
}
cur++;
}
assert(false, MD_S8Fmt(cg_arena, "Could not find integer for %s\n", name));
return -1;
}
MD_String8 ChildValue(MD_Node *n, MD_String8 name) {
MD_Node *child_with_value = MD_ChildFromString(n, name, 0);
assert(child_with_value, MD_S8Fmt(cg_arena, "Could not find child named '%.*s' of node '%.*s'", MD_S8VArg(name), MD_S8VArg(n->string)));
assert(child_with_value->first_child, MD_S8Lit("Must have child"));
return child_with_value->first_child->string;
}
MD_String8 asset_file_path(MD_String8 filename) {
return MD_S8Fmt(cg_arena, "%.*s/%.*s", MD_S8VArg(ASSETS_FOLDER), MD_S8VArg(filename));
}
int main(int argc, char **argv) {
MD_Arena *cg_arena = MD_ArenaAlloc();
cg_arena = MD_ArenaAlloc();
assert(cg_arena, MD_S8Lit("Memory"));
// I hope to God MD_String8's are null terminated...
@ -52,17 +98,13 @@ int main(int argc, char **argv) {
MD_String8List declarations_list = {0};
MD_String8List load_list = {0};
MD_String8List level_decl_list = {0};
for(MD_EachNode(node, parse.node->first_child)) {
if(MD_S8Match(node->first_tag->string, MD_S8Lit("image"), 0)) {
MD_String8 variable_name = MD_S8Fmt(cg_arena, "image_%.*s", MD_S8VArg(node->string));
log("New image variable %.*s\n", MD_S8VArg(variable_name));
MD_String8 filepath = {0};
for(MD_EachNode(child, node->first_child)) {
if(MD_S8Match(child->string, MD_S8Lit("filepath"), 0)) {
filepath = child->next->next->string; // segfault here but to check for it is ugly
}
}
filepath = MD_S8Fmt(cg_arena, "%.*s/%.*s", MD_S8VArg(ASSETS_FOLDER), MD_S8VArg(filepath));
MD_String8 filepath = ChildValue(node, MD_S8Lit("filepath"));
filepath = asset_file_path(filepath);
assert(filepath.str != 0, MD_S8Fmt(cg_arena, "No filepath specified for image '%.*s'", MD_S8VArg(node->string)));
FILE *asset_file = fopen(filepath.str, "r");
assert(asset_file, MD_S8Fmt(cg_arena, "Could not open filepath %.*s for asset '%.*s'", MD_S8VArg(filepath), MD_S8VArg(node->string)));
@ -71,6 +113,47 @@ int main(int argc, char **argv) {
MD_S8ListPush(cg_arena, &declarations_list, MD_S8Fmt(cg_arena, "sg_image %.*s = {0};\n", MD_S8VArg(variable_name)));
MD_S8ListPush(cg_arena, &load_list, MD_S8Fmt(cg_arena, "%.*s = load_image(\"%.*s\");\n", MD_S8VArg(variable_name), MD_S8VArg(filepath)));
}
if(MD_S8Match(node->first_tag->string, MD_S8Lit("level"), 0)) {
MD_String8 variable_name = MD_S8Fmt(cg_arena, "level_%.*s", MD_S8VArg(node->string));
MD_String8 filepath = asset_file_path(ChildValue(node, MD_S8Lit("filepath")));
MD_String8 level_file_contents = MD_LoadEntireFile(cg_arena, filepath);
assert(level_file_contents.str != 0 && level_file_contents.size > 1, MD_S8Lit("Failed to load level file"));
jsmn_parser p;
jsmntok_t t[1024*5];
jsmn_init(&p);
const char *json_string = level_file_contents.str;
int r = jsmn_parse(&p, json_string, level_file_contents.size, t, sizeof(t) / sizeof(t[0]));
assert(r > 0, MD_S8Lit("Failed to parse json"));
int layer_obj_token = 0;
fprintf(output, "Level %.*s = {\n.tiles = {\n", MD_S8VArg(variable_name));
// this code is absolutely disgusting but I think it's fine because this is meta code, I guess time will tell if this needs to be cleaner or not... sorry future self!
for(int i = 0; i < r; i++) {
if(jsoneq(json_string, &t[i], "data")) {
jsmntok_t *arr = &t[i+1];
assert(arr->type == JSMN_ARRAY, MD_S8Lit("Expected array after data"));
int width = getnextofname(json_string, &t[i+1], "width");
int height = getnextofname(json_string, &t[i+1], "height");
fprintf(output, "{ ");
int last_token_index = i + 2 + arr->size;
for(int ii = i + 2; ii < last_token_index; ii++) {
jsmntok_t *num_to_add = &t[ii];
assert(num_to_add->type == JSMN_PRIMITIVE, MD_S8Lit("not a number"));
int num_index = ii - (i + 2);
fprintf(output, "%.*s, ", num_to_add->end - num_to_add->start, json_string + num_to_add->start);
if(num_index % width == width - 1) {
if(ii == last_token_index - 1) {
fprintf(output, "},\n}\n}; // %.*s\n", MD_S8VArg(variable_name));
} else {
fprintf(output, "},\n{ ");
}
}
}
}
}
}
}
MD_StringJoin join = MD_ZERO_STRUCT;

149
main.c
Unescape Escape View File

@ -12,6 +12,32 @@
#include <math.h>
typedef struct AABB {
HMM_Vec2 upper_left;
HMM_Vec2 lower_right;
} AABB;
typedef struct TileInstance {
uint16_t kind;
} TileInstance;
typedef struct TileInfo {
uint16_t kind;
int num_frames;
AABB regions[32];
sg_image *img;
} TileInfo;
#define LEVEL_TILES 60
#define TILE_SIZE 32 // in pixels
typedef struct Level {
TileInstance tiles[LEVEL_TILES][LEVEL_TILES];
} Level;
HMM_Vec2 tilecoord_to_world(int x, int y) {
return HMM_V2( (float)x * (float)TILE_SIZE * 1.0f, -(float)y * (float)TILE_SIZE * 1.0f );
}
sg_image load_image(const char *path) {
sg_image to_return = {0};
@ -22,7 +48,7 @@ sg_image load_image(const char *path) {
&png_width, &png_height,
&num_channels, 0);
assert(pixels);
to_return = sg_make_image(&(sg_image_desc){
to_return = sg_make_image(&(sg_image_desc) {
.width = png_width,
.height = png_height,
.pixel_format = SG_PIXELFORMAT_RGBA8,
@ -40,6 +66,20 @@ sg_image load_image(const char *path) {
#include "quad-sapp.glsl.h"
#include "assets.gen.c"
TileInfo tiles[] = {
{
.kind = 53,
.num_frames = 1,
.regions[0] = { 0, 32, 32, 64 },
.img = &image_animated_terrain,
},
};
TileInfo mystery_tile = {
.img = &image_mystery_tile,
.num_frames = 1,
.regions[0] = { 0, 0, 32, 32 },
};
// so can be grep'd and removed
#define dbgprint(...) { printf("Debug | %s:%d | ", __FILE__, __LINE__); printf(__VA_ARGS__); }
@ -60,7 +100,7 @@ void init(void) {
state.bind.vertex_buffers[0] = sg_make_buffer(&(sg_buffer_desc){
.usage = SG_USAGE_STREAM,
//.data = SG_RANGE(vertices),
.size = 1024,
.size = 1024*500,
.label = "quad-vertices"
});
@ -97,21 +137,14 @@ void init(void) {
});
state.pass_action = (sg_pass_action) {
.colors[0] = { .action=SG_ACTION_CLEAR, .value={0.0f, 0.0f, 0.0f, 1.0f } }
.colors[0] = { .action=SG_ACTION_CLEAR, .value={1.0f, 1.0f, 1.0f, 1.0f } }
};
}
typedef struct AABB {
HMM_Vec2 upper_left;
HMM_Vec2 lower_right;
} AABB;
typedef HMM_Vec4 Color;
Color col(float r, float g, float b, float a) {
return HMM_V4(r, g, b, a);
}
#define WHITE col(1.0f, 1.0f, 1.0f, 1.0f)
#define WHITE (Color){1.0f, 1.0f, 1.0f, 1.0f}
HMM_Vec2 screen_size() {
return HMM_V2((float)sapp_width(), (float)sapp_height());
@ -132,7 +165,7 @@ HMM_Vec2 cam_offset() {
return HMM_AddV2(cam.pos, HMM_MulV2F(screen_size(), 0.5f));
}
// screen coords are in bottom right, and in pixels
// screen coords are in pixels counting from bottom left as (0,0), Y+ is up
HMM_Vec2 world_to_screen(HMM_Vec2 world) {
HMM_Vec2 to_return = world;
to_return = HMM_MulV2F(to_return, cam.scale);
@ -148,21 +181,80 @@ HMM_Vec2 screen_to_world(HMM_Vec2 screen) {
}
// out must be of at least length 4
void quad_points_centered_size(HMM_Vec2 *out, HMM_Vec2 at, HMM_Vec2 size) {
void quad_points_corner_size(HMM_Vec2 *out, HMM_Vec2 at, HMM_Vec2 size) {
out[0] = HMM_V2(0.0, 0.0);
out[1] = HMM_V2(size.X, 0.0);
out[2] = HMM_V2(size.X, -size.Y);
out[3] = HMM_V2(0.0, -size.Y);
for(int i = 0; i < 4; i++) {
out[i] = HMM_AddV2(out[i], HMM_V2(-size.X*0.5f, size.Y*0.5f));
out[i] = HMM_AddV2(out[i], at);
}
}
// out must be of at least length 4
void quad_points_centered_size(HMM_Vec2 *out, HMM_Vec2 at, HMM_Vec2 size) {
quad_points_corner_size(out, at, size);
for(int i = 0; i < 4; i++) {
out[i] = HMM_AddV2(out[i], HMM_V2(-size.X*0.5f, size.Y*0.5f));
}
}
// both segment_a and segment_b must be arrays of length 2
bool segments_overlapping(float *a_segment, float *b_segment) {
assert(a_segment[1] >= a_segment[0]);
assert(b_segment[1] >= b_segment[0]);
float total_length = (a_segment[1] - a_segment[0]) + (b_segment[1] - b_segment[0]);
float farthest_to_left = min(a_segment[0], b_segment[0]);
float farthest_to_right = max(a_segment[1], b_segment[1]);
if (farthest_to_right - farthest_to_left < total_length) {
return true;
} else {
return false;
}
}
bool overlapping(AABB a, AABB b) {
// x axis
{
float a_segment[2] = { a.upper_left.X, a.lower_right.X };
float b_segment[2] = { b.upper_left.X, b.lower_right.X };
if(segments_overlapping(a_segment, b_segment)) {
} else {
return false;
}
}
// y axis
{
float a_segment[2] = { a.lower_right.Y, a.upper_left.Y };
float b_segment[2] = { b.lower_right.Y, b.upper_left.Y };
if(segments_overlapping(a_segment, b_segment)) {
} else {
return false;
}
}
return true; // both segments overlapping
}
// points must be of length 4, and be in the order: upper left, upper right, lower right, lower left
// the points are in pixels in screen space. The image region is in pixel space of the image
void draw_quad_all_parameters(HMM_Vec2 *points, sg_image image, AABB image_region, Color tint) {
AABB cam_aabb = { .upper_left = HMM_V2(0.0, screen_size().Y), .lower_right = HMM_V2(screen_size().X, 0.0) };
AABB points_bounding_box = { .upper_left = HMM_V2(INFINITY, -INFINITY), .lower_right = HMM_V2(-INFINITY, INFINITY) };
for(int i = 0; i < 4; i++) {
points_bounding_box.upper_left.X = min(points_bounding_box.upper_left.X, points[i].X);
points_bounding_box.upper_left.Y = max(points_bounding_box.upper_left.Y, points[i].Y);
points_bounding_box.lower_right.X = max(points_bounding_box.lower_right.X, points[i].X);
points_bounding_box.lower_right.Y = min(points_bounding_box.lower_right.Y, points[i].Y);
}
if(!overlapping(cam_aabb, points_bounding_box)) {
return; // cull out of screen quads
}
float new_vertices[ (2 + 2)*4 ];
HMM_Vec2 region_size = HMM_SubV2(image_region.lower_right, image_region.upper_left);
assert(region_size.X > 0.0);
@ -258,10 +350,29 @@ void frame(void) {
sg_begin_default_pass(&state.pass_action, sapp_width(), sapp_height());
sg_apply_pipeline(state.pip);
// background
HMM_Vec2 bg_points[4] = {0};
quad_points_centered_size(bg_points, HMM_V2(0.0, 0.0), img_size(image_bg_tilesheet));
draw_quad_world_all(bg_points, image_bg_tilesheet, full_region(image_bg_tilesheet), WHITE);
// tilemap
#if 1
Level * cur_level = &level_level0;
for(int row = 0; row < LEVEL_TILES; row++) {
for(int col = 0; col < LEVEL_TILES; col++)
{
TileInstance cur = cur_level->tiles[row][col];
if(cur.kind != 0){
HMM_Vec2 points[4] = {0};
quad_points_corner_size(points, tilecoord_to_world(col, row), HMM_V2(TILE_SIZE, TILE_SIZE));
TileInfo *info = NULL;
for(int i = 0; i < sizeof(tiles)/sizeof(*tiles); i++) {
if(tiles[i].kind == cur.kind) {
info = &tiles[i];
break;
}
}
if(info == NULL) info = &mystery_tile;
draw_quad_world_all(points, *info->img, info->regions[0], WHITE);
}
}
}
#endif
// merchant
int index = (int)floor(time/0.3);
@ -319,7 +430,7 @@ sapp_desc sokol_main(int argc, char* argv[]) {
.event_cb = event,
.width = 800,
.height = 600,
.gl_force_gles2 = true,
//.gl_force_gles2 = true, not sure why this was here in example, look into
.window_title = "RPGPT",
.win32_console_attach = true,

2
run_codegen.bat
Unescape Escape View File

@ -7,6 +7,7 @@ rmdir /S /q assets\copyrighted
mkdir assets\copyrighted
copy "EPIC RPG World Pack - Ancient Ruins V 1.7\EPIC RPG World Pack - Ancient Ruins V 1.7\Characters\NPC Merchant-idle.png" "assets\copyrighted\merchant.png" || goto :error
copy "EPIC RPG World Pack - Ancient Ruins V 1.7\EPIC RPG World Pack - Ancient Ruins V 1.7\Tilesets\wall-1 - 3 tiles tall.png" "assets\copyrighted\wall-1 - 3 tiles tall.png" || goto :error
copy "EPIC RPG World Pack - Ancient Ruins V 1.7\EPIC RPG World Pack - Ancient Ruins V 1.7\Tilesets\Tileset-Animated Terrains-16 frames.png" "assets\copyrighted\animated_terrain.png" || goto :error
rmdir /S /q gen
mkdir gen
@ -21,4 +22,5 @@ codegen || goto :error
goto :EOF
:error
echo Codegen failed
exit /B %ERRORLEVEL%

471
thirdparty/jsmn.h vendored
Unescape Escape View File

@ -0,0 +1,471 @@
/*
* MIT License
*
* Copyright (c) 2010 Serge Zaitsev
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef JSMN_H
#define JSMN_H
#include <stddef.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifdef JSMN_STATIC
#define JSMN_API static
#else
#define JSMN_API extern
#endif
/**
* JSON type identifier. Basic types are:
* o Object
* o Array
* o String
* o Other primitive: number, boolean (true/false) or null
*/
typedef enum {
JSMN_UNDEFINED = 0,
JSMN_OBJECT = 1 << 0,
JSMN_ARRAY = 1 << 1,
JSMN_STRING = 1 << 2,
JSMN_PRIMITIVE = 1 << 3
} jsmntype_t;
enum jsmnerr {
/* Not enough tokens were provided */
JSMN_ERROR_NOMEM = -1,
/* Invalid character inside JSON string */
JSMN_ERROR_INVAL = -2,
/* The string is not a full JSON packet, more bytes expected */
JSMN_ERROR_PART = -3
};
/**
* JSON token description.
* type type (object, array, string etc.)
* start start position in JSON data string
* end end position in JSON data string
*/
typedef struct jsmntok {
jsmntype_t type;
int start;
int end;
int size;
#ifdef JSMN_PARENT_LINKS
int parent;
#endif
} jsmntok_t;
/**
* JSON parser. Contains an array of token blocks available. Also stores
* the string being parsed now and current position in that string.
*/
typedef struct jsmn_parser {
unsigned int pos; /* offset in the JSON string */
unsigned int toknext; /* next token to allocate */
int toksuper; /* superior token node, e.g. parent object or array */
} jsmn_parser;
/**
* Create JSON parser over an array of tokens
*/
JSMN_API void jsmn_init(jsmn_parser *parser);
/**
* Run JSON parser. It parses a JSON data string into and array of tokens, each
* describing
* a single JSON object.
*/
JSMN_API int jsmn_parse(jsmn_parser *parser, const char *js, const size_t len,
jsmntok_t *tokens, const unsigned int num_tokens);
#ifndef JSMN_HEADER
/**
* Allocates a fresh unused token from the token pool.
*/
static jsmntok_t *jsmn_alloc_token(jsmn_parser *parser, jsmntok_t *tokens,
const size_t num_tokens) {
jsmntok_t *tok;
if (parser->toknext >= num_tokens) {
return NULL;
}
tok = &tokens[parser->toknext++];
tok->start = tok->end = -1;
tok->size = 0;
#ifdef JSMN_PARENT_LINKS
tok->parent = -1;
#endif
return tok;
}
/**
* Fills token type and boundaries.
*/
static void jsmn_fill_token(jsmntok_t *token, const jsmntype_t type,
const int start, const int end) {
token->type = type;
token->start = start;
token->end = end;
token->size = 0;
}
/**
* Fills next available token with JSON primitive.
*/
static int jsmn_parse_primitive(jsmn_parser *parser, const char *js,
const size_t len, jsmntok_t *tokens,
const size_t num_tokens) {
jsmntok_t *token;
int start;
start = parser->pos;
for (; parser->pos < len && js[parser->pos] != '\0'; parser->pos++) {
switch (js[parser->pos]) {
#ifndef JSMN_STRICT
/* In strict mode primitive must be followed by "," or "}" or "]" */
case ':':
#endif
case '\t':
case '\r':
case '\n':
case ' ':
case ',':
case ']':
case '}':
goto found;
default:
/* to quiet a warning from gcc*/
break;
}
if (js[parser->pos] < 32 || js[parser->pos] >= 127) {
parser->pos = start;
return JSMN_ERROR_INVAL;
}
}
#ifdef JSMN_STRICT
/* In strict mode primitive must be followed by a comma/object/array */
parser->pos = start;
return JSMN_ERROR_PART;
#endif
found:
if (tokens == NULL) {
parser->pos--;
return 0;
}
token = jsmn_alloc_token(parser, tokens, num_tokens);
if (token == NULL) {
parser->pos = start;
return JSMN_ERROR_NOMEM;
}
jsmn_fill_token(token, JSMN_PRIMITIVE, start, parser->pos);
#ifdef JSMN_PARENT_LINKS
token->parent = parser->toksuper;
#endif
parser->pos--;
return 0;
}
/**
* Fills next token with JSON string.
*/
static int jsmn_parse_string(jsmn_parser *parser, const char *js,
const size_t len, jsmntok_t *tokens,
const size_t num_tokens) {
jsmntok_t *token;
int start = parser->pos;
/* Skip starting quote */
parser->pos++;
for (; parser->pos < len && js[parser->pos] != '\0'; parser->pos++) {
char c = js[parser->pos];
/* Quote: end of string */
if (c == '\"') {
if (tokens == NULL) {
return 0;
}
token = jsmn_alloc_token(parser, tokens, num_tokens);
if (token == NULL) {
parser->pos = start;
return JSMN_ERROR_NOMEM;
}
jsmn_fill_token(token, JSMN_STRING, start + 1, parser->pos);
#ifdef JSMN_PARENT_LINKS
token->parent = parser->toksuper;
#endif
return 0;
}
/* Backslash: Quoted symbol expected */
if (c == '\\' && parser->pos + 1 < len) {
int i;
parser->pos++;
switch (js[parser->pos]) {
/* Allowed escaped symbols */
case '\"':
case '/':
case '\\':
case 'b':
case 'f':
case 'r':
case 'n':
case 't':
break;
/* Allows escaped symbol \uXXXX */
case 'u':
parser->pos++;
for (i = 0; i < 4 && parser->pos < len && js[parser->pos] != '\0';
i++) {
/* If it isn't a hex character we have an error */
if (!((js[parser->pos] >= 48 && js[parser->pos] <= 57) || /* 0-9 */
(js[parser->pos] >= 65 && js[parser->pos] <= 70) || /* A-F */
(js[parser->pos] >= 97 && js[parser->pos] <= 102))) { /* a-f */
parser->pos = start;
return JSMN_ERROR_INVAL;
}
parser->pos++;
}
parser->pos--;
break;
/* Unexpected symbol */
default:
parser->pos = start;
return JSMN_ERROR_INVAL;
}
}
}
parser->pos = start;
return JSMN_ERROR_PART;
}
/**
* Parse JSON string and fill tokens.
*/
JSMN_API int jsmn_parse(jsmn_parser *parser, const char *js, const size_t len,
jsmntok_t *tokens, const unsigned int num_tokens) {
int r;
int i;
jsmntok_t *token;
int count = parser->toknext;
for (; parser->pos < len && js[parser->pos] != '\0'; parser->pos++) {
char c;
jsmntype_t type;
c = js[parser->pos];
switch (c) {
case '{':
case '[':
count++;
if (tokens == NULL) {
break;
}
token = jsmn_alloc_token(parser, tokens, num_tokens);
if (token == NULL) {
return JSMN_ERROR_NOMEM;
}
if (parser->toksuper != -1) {
jsmntok_t *t = &tokens[parser->toksuper];
#ifdef JSMN_STRICT
/* In strict mode an object or array can't become a key */
if (t->type == JSMN_OBJECT) {
return JSMN_ERROR_INVAL;
}
#endif
t->size++;
#ifdef JSMN_PARENT_LINKS
token->parent = parser->toksuper;
#endif
}
token->type = (c == '{' ? JSMN_OBJECT : JSMN_ARRAY);
token->start = parser->pos;
parser->toksuper = parser->toknext - 1;
break;
case '}':
case ']':
if (tokens == NULL) {
break;
}
type = (c == '}' ? JSMN_OBJECT : JSMN_ARRAY);
#ifdef JSMN_PARENT_LINKS
if (parser->toknext < 1) {
return JSMN_ERROR_INVAL;
}
token = &tokens[parser->toknext - 1];
for (;;) {
if (token->start != -1 && token->end == -1) {
if (token->type != type) {
return JSMN_ERROR_INVAL;
}
token->end = parser->pos + 1;
parser->toksuper = token->parent;
break;
}
if (token->parent == -1) {
if (token->type != type || parser->toksuper == -1) {
return JSMN_ERROR_INVAL;
}
break;
}
token = &tokens[token->parent];
}
#else
for (i = parser->toknext - 1; i >= 0; i--) {
token = &tokens[i];
if (token->start != -1 && token->end == -1) {
if (token->type != type) {
return JSMN_ERROR_INVAL;
}
parser->toksuper = -1;
token->end = parser->pos + 1;
break;
}
}
/* Error if unmatched closing bracket */
if (i == -1) {
return JSMN_ERROR_INVAL;
}
for (; i >= 0; i--) {
token = &tokens[i];
if (token->start != -1 && token->end == -1) {
parser->toksuper = i;
break;
}
}
#endif
break;
case '\"':
r = jsmn_parse_string(parser, js, len, tokens, num_tokens);
if (r < 0) {
return r;
}
count++;
if (parser->toksuper != -1 && tokens != NULL) {
tokens[parser->toksuper].size++;
}
break;
case '\t':
case '\r':
case '\n':
case ' ':
break;
case ':':
parser->toksuper = parser->toknext - 1;
break;
case ',':
if (tokens != NULL && parser->toksuper != -1 &&
tokens[parser->toksuper].type != JSMN_ARRAY &&
tokens[parser->toksuper].type != JSMN_OBJECT) {
#ifdef JSMN_PARENT_LINKS
parser->toksuper = tokens[parser->toksuper].parent;
#else
for (i = parser->toknext - 1; i >= 0; i--) {
if (tokens[i].type == JSMN_ARRAY || tokens[i].type == JSMN_OBJECT) {
if (tokens[i].start != -1 && tokens[i].end == -1) {
parser->toksuper = i;
break;
}
}
}
#endif
}
break;
#ifdef JSMN_STRICT
/* In strict mode primitives are: numbers and booleans */
case '-':
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case 't':
case 'f':
case 'n':
/* And they must not be keys of the object */
if (tokens != NULL && parser->toksuper != -1) {
const jsmntok_t *t = &tokens[parser->toksuper];
if (t->type == JSMN_OBJECT ||
(t->type == JSMN_STRING && t->size != 0)) {
return JSMN_ERROR_INVAL;
}
}
#else
/* In non-strict mode every unquoted value is a primitive */
default:
#endif
r = jsmn_parse_primitive(parser, js, len, tokens, num_tokens);
if (r < 0) {
return r;
}
count++;
if (parser->toksuper != -1 && tokens != NULL) {
tokens[parser->toksuper].size++;
}
break;
#ifdef JSMN_STRICT
/* Unexpected char in strict mode */
default:
return JSMN_ERROR_INVAL;
#endif
}
}
if (tokens != NULL) {
for (i = parser->toknext - 1; i >= 0; i--) {
/* Unmatched opened object or array */
if (tokens[i].start != -1 && tokens[i].end == -1) {
return JSMN_ERROR_PART;
}
}
}
return count;
}
/**
* Creates a new parser based over a given buffer with an array of tokens
* available.
*/
JSMN_API void jsmn_init(jsmn_parser *parser) {
parser->pos = 0;
parser->toknext = 0;
parser->toksuper = -1;
}
#endif /* JSMN_HEADER */
#ifdef __cplusplus
}
#endif
#endif /* JSMN_H */
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