Mercurial > MadButterfly

annotate src/sprite.c @ 651:aa52883534fc

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author Thinker K.F. Li <thinker@branda.to>
date Sat, 31 Jul 2010 13:28:48 +0800
parents 84ce2d4a8c3f
children 586e50f82c1f
rev   line source
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1 #include <stdio.h>
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2 #include <stdlib.h>
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3 #include <string.h>
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4 #include "mb_graph_engine.h"
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5 #include <dlfcn.h>
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6 #include <sys/stat.h>
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7 #include "mb_types.h"
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8 #include "mb_shapes.h"
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9 #include "mb_tools.h"
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10 #include "mb_redraw_man.h"
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11 #include "mb_observer.h"
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12 #include "mb_prop.h"
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13
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14 #define ASSERT(x)
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15 #define OK 0
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16 #define ERR 1
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17
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18 static char *sprite_search_path = NULL;
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19
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20 static char *sprite_search_so(const char *name) {
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21 struct stat st;
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22 int fsz;
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23 char *fullname;
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24 int r;
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25
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26 if(sprite_search_path == NULL)
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27 sprite_search_path = strdup("/usr/share/madbutterffly");
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28
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29 fsz = strlen(sprite_search_path) + strlen(name) + 5;
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30 fullname = (char *)malloc(fsz);
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31
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32 snprintf(fullname, fsz, "%s/%s.so", sprite_search_path, name);
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33 r = stat(fullname, &st);
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34 if(r != 0) {
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35 free(fullname);
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36 return NULL;
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37 }
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38
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39 return fullname;
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40 }
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41
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42 void sprite_set_search_path(char *path) {
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43 int sz;
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44
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45 if (sprite_search_path)
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46 free(sprite_search_path);
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47
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48 sprite_search_path = strdup(path);
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49
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50 sz = strlen(sprite_search_path);
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51 if(sprite_search_path[sz - 1] == '/')
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52 sprite_search_path[sz - 1] = 0;
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53 }
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54
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55 mb_sprite_t *
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56 sprite_load(const char *name, redraw_man_t *rdman, coord_t *root) {
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57 char cnstr_name[256];
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58 char *so_path;
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59 const char *bname;
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60 void *handle;
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61 mb_sprite_t *(*cnstr)(redraw_man_t *, coord_t *);
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62 mb_sprite_t *obj;
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63 int r;
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64
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65 so_path = sprite_search_so(name);
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66 if(so_path == NULL)
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67 return NULL;
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68
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69 handle = dlopen(so_path, RTLD_LAZY);
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70 free(so_path);
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71 if (handle == NULL)
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72 return NULL;
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73
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74 bname = strrchr(name, '/');
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75 if(bname != NULL && strlen(bname) > 250)
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76 return NULL;
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77
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78 if(bname == NULL)
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79 bname = name;
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80 else
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81 bname++;
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82
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83 snprintf(cnstr_name, sizeof(cnstr_name), "%s_new", bname);
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84 cnstr = dlsym(handle, cnstr_name);
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85 if (cnstr == NULL)
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86 return NULL;
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87
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88 obj = cnstr(rdman, root);
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89
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90 return obj;
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91 }
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92
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93 /* vim: set ts=4 */