osgjs_conv

annotate src/main.c @ 0:75807c6b939b

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initial commit
author John Tsiombikas <nuclear@member.fsf.org>
date Thu, 02 Jun 2016 14:25:37 +0300
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nuclear@0 1 #include <stdio.h>
nuclear@0 2 #include <stdlib.h>
nuclear@0 3 #include <string.h>
nuclear@0 4 #include <errno.h>
nuclear@0 5 #include <jansson.h>
nuclear@0 6
nuclear@0 7 void proc_osg_node(const char *node_type, json_t *node, int level);
nuclear@0 8 void proc_geometry(json_t *node, int level);
nuclear@0 9 void proc_primitive(json_t *prim, int level);
nuclear@0 10 json_t *find_node(json_t *node, const char *key);
nuclear@0 11
nuclear@0 12 int main(int argc, char **argv)
nuclear@0 13 {
nuclear@0 14 FILE *fp = stdin;
nuclear@0 15 json_t *root, *osgnode;
nuclear@0 16 json_error_t err;
nuclear@0 17
nuclear@0 18 if(argc > 1) {
nuclear@0 19 if(!(fp = fopen(argv[1], "r"))) {
nuclear@0 20 fprintf(stderr, "failed to open osgjs file: %s: %s\n", argv[1], strerror(errno));
nuclear@0 21 return 1;
nuclear@0 22 }
nuclear@0 23 }
nuclear@0 24
nuclear@0 25 if(!(root = json_loadf(fp, 0, &err))) {
nuclear@0 26 fprintf(stderr, "json parsing error at %d:%d: %s\n", err.line, err.column, err.text);
nuclear@0 27 return 1;
nuclear@0 28 }
nuclear@0 29 if(!json_is_object(root)) {
nuclear@0 30 fprintf(stderr, "root node is not an object!\n");
nuclear@0 31 return 1;
nuclear@0 32 }
nuclear@0 33 if(!(osgnode = json_object_get(root, "osg.Node"))) {
nuclear@0 34 fprintf(stderr, "root doesn't have an osg.Node field!\n");
nuclear@0 35 return 1;
nuclear@0 36 }
nuclear@0 37 proc_osg_node("osg.Node", osgnode, 0);
nuclear@0 38
nuclear@0 39 json_decref(root);
nuclear@0 40 return 0;
nuclear@0 41 }
nuclear@0 42
nuclear@0 43 void indent(int n)
nuclear@0 44 {
nuclear@0 45 while(n--) {
nuclear@0 46 putchar(' ');
nuclear@0 47 }
nuclear@0 48 }
nuclear@0 49
nuclear@0 50 void proc_osg_node(const char *node_type, json_t *node, int level)
nuclear@0 51 {
nuclear@0 52 json_t *children, *name_field;
nuclear@0 53 const char *name = 0;
nuclear@0 54
nuclear@0 55 if((name_field = json_object_get(node, "Name"))) {
nuclear@0 56 if(json_is_string(name_field)) {
nuclear@0 57 name = json_string_value(name_field);
nuclear@0 58 }
nuclear@0 59 }
nuclear@0 60
nuclear@0 61 indent(level);
nuclear@0 62 printf("%s: %s\n", node_type, name ? name : "<unnamed>");
nuclear@0 63
nuclear@0 64 if(strcmp(node_type, "osg.Geometry") == 0) {
nuclear@0 65 proc_geometry(node, level);
nuclear@0 66 }
nuclear@0 67
nuclear@0 68 if((children = json_object_get(node, "Children")) && json_is_array(children)) {
nuclear@0 69 int i, num = json_array_size(children);
nuclear@0 70
nuclear@0 71 for(i=0; i<num; i++) {
nuclear@0 72 void *fiter;
nuclear@0 73 json_t *child = json_array_get(children, i);
nuclear@0 74 if(!child) continue;
nuclear@0 75
nuclear@0 76 fiter = json_object_iter(child);
nuclear@0 77 while(fiter) {
nuclear@0 78 const char *key = json_object_iter_key(fiter);
nuclear@0 79 if(strstr(key, "osg") == key) { /* starts with osg */
nuclear@0 80 // recurse into new OSG node
nuclear@0 81 proc_osg_node(key, json_object_iter_value(fiter), level + 1);
nuclear@0 82 }
nuclear@0 83 fiter = json_object_iter_next(child, fiter);
nuclear@0 84 }
nuclear@0 85 }
nuclear@0 86 }
nuclear@0 87 }
nuclear@0 88
nuclear@0 89 void proc_geometry(json_t *node, int level)
nuclear@0 90 {
nuclear@0 91 json_t *prim_list;
nuclear@0 92 int i, num;
nuclear@0 93
nuclear@0 94 if(!(prim_list = json_object_get(node, "PrimitiveSetList"))) {
nuclear@0 95 fprintf(stderr, "geometry node without a PrimitiveSetList array\n");
nuclear@0 96 return;
nuclear@0 97 }
nuclear@0 98 if(!json_is_array(prim_list)) {
nuclear@0 99 fprintf(stderr, "PrimitiveSetList should be an array\n");
nuclear@0 100 return;
nuclear@0 101 }
nuclear@0 102 num = json_array_size(prim_list);
nuclear@0 103
nuclear@0 104 for(i=0; i<num; i++) {
nuclear@0 105 json_t *prim;
nuclear@0 106
nuclear@0 107 prim = json_array_get(prim_list, i);
nuclear@0 108 if(!json_is_object(prim)) continue;
nuclear@0 109
nuclear@0 110 proc_primitive(prim, level);
nuclear@0 111 }
nuclear@0 112 }
nuclear@0 113
nuclear@0 114 void proc_primitive(json_t *prim, int level)
nuclear@0 115 {
nuclear@0 116 json_t *mode;
nuclear@0 117 const char *mode_str;
nuclear@0 118
nuclear@0 119 if(!(mode = json_object_get(prim, "Mode"))) {
nuclear@0 120 fprintf(stderr, "skipping PrimitiveSetList item without Mode\n");
nuclear@0 121 return;
nuclear@0 122 }
nuclear@0 123 if(!json_is_string(mode) || !(mode_str = json_string_value(mode))) {
nuclear@0 124 fprintf(stderr, "primitive mode should be a string!\n");
nuclear@0 125 return;
nuclear@0 126 }
nuclear@0 127 }
nuclear@0 128
nuclear@0 129 json_t *find_node(json_t *node, const char *key)
nuclear@0 130 {
nuclear@0 131 json_t *res;
nuclear@0 132 if(json_is_object(node)) {
nuclear@0 133 void *iter = json_object_iter(node);
nuclear@0 134 while(iter) {
nuclear@0 135 if(strcmp(json_object_iter_key(iter), key) == 0) {
nuclear@0 136 return json_object_iter_value(iter);
nuclear@0 137 }
nuclear@0 138 if((res = find_node(json_object_iter_value(iter), key))) {
nuclear@0 139 return res;
nuclear@0 140 }
nuclear@0 141 iter = json_object_iter_next(node, iter);
nuclear@0 142 }
nuclear@0 143 } else if(json_is_array(node)) {
nuclear@0 144 int i, num = json_array_size(node);
nuclear@0 145 for(i=0; i<num; i++) {
nuclear@0 146 if((res = find_node(json_array_get(node, i), key))) {
nuclear@0 147 return res;
nuclear@0 148 }
nuclear@0 149 }
nuclear@0 150 }
nuclear@0 151 return 0;
nuclear@0 152 }