Mercurial > MadButterfly

annotate src/sprite.c @ 1316:9ab8d50dcf7e

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Refactory code of refreshing UI
author Thinker K.F. Li <thinker@codemud.net>
date Sat, 22 Jan 2011 19:28:36 +0800
parents 8679b03f72e8
children
rev   line source
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1 // -*- indent-tabs-mode: t; tab-width: 8; c-basic-offset: 4; -*-
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2 // vim: sw=4:ts=8:sts=4
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3 #include <stdio.h>
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4 #include <stdlib.h>
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5 #include <string.h>
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6 #include <dlfcn.h>
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7 #include <sys/stat.h>
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8 #include "mb_types.h"
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9 #include "mb_redraw_man.h"
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10 #include "mb_sprite.h"
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11
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12 #define ASSERT(x)
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13 #define OK 0
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14 #define ERR 1
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15
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16 static char *sprite_search_path = NULL;
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17
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18 static char *sprite_search_so(const char *name) {
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19 struct stat st;
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20 int fsz;
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21 char *fullname;
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22 int r;
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23
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24 if(sprite_search_path == NULL)
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25 sprite_search_path = strdup("/usr/share/madbutterffly");
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26
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27 fsz = strlen(sprite_search_path) + strlen(name) + 5;
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28 fullname = (char *)malloc(fsz);
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29
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30 snprintf(fullname, fsz, "%s/%s.so", sprite_search_path, name);
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31 r = stat(fullname, &st);
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32 if(r != 0) {
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33 free(fullname);
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34 return NULL;
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35 }
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36
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37 return fullname;
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38 }
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39
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40 void sprite_set_search_path(const char *path) {
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41 int sz;
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42
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43 if (sprite_search_path)
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44 free(sprite_search_path);
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45
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46 sprite_search_path = strdup(path);
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47
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48 sz = strlen(sprite_search_path);
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49 if(sprite_search_path[sz - 1] == '/')
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50 sprite_search_path[sz - 1] = 0;
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51 }
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52
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53 mb_sprite_t *
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54 sprite_load(const char *name, redraw_man_t *rdman, coord_t *root) {
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55 char cnstr_name[256];
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56 char *so_path;
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57 const char *bname;
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58 void *handle;
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59 mb_sprite_t *(*cnstr)(redraw_man_t *, coord_t *);
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60 mb_sprite_t *obj;
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61 int r;
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62
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63 so_path = sprite_search_so(name);
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64 if(so_path == NULL)
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65 return NULL;
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66
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67 handle = dlopen(so_path, RTLD_LAZY);
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68 free(so_path);
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69 if (handle == NULL)
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70 return NULL;
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71
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72 bname = strrchr(name, '/');
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73 if(bname != NULL && strlen(bname) > 250)
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74 return NULL;
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75
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76 if(bname == NULL)
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77 bname = name;
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78 else
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79 bname++;
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80
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81 snprintf(cnstr_name, sizeof(cnstr_name), "%s_new", bname);
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82 cnstr = dlsym(handle, cnstr_name);
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83 if (cnstr == NULL)
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84 return NULL;
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85
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86 obj = cnstr(rdman, root);
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87
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88 return obj;
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89 }