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annotate util.c @ 795:bce97fc0bb8a

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Fix mingw-w64 build and cross-compilation
author =?UTF-8?q?Higor=20Eur=C3=ADpedes?= <heuripedes@gmail.com>
date Sun, 26 Jul 2015 10:59:41 -0700
parents 13d3744b170e
children 0b692b5d154b
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #include <string.h>
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2 #include <stdlib.h>
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3 #include <stdio.h>
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4 #include <ctype.h>
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5 #include <stdint.h>
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6
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7 #include <sys/types.h>
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8 #include <sys/stat.h>
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9 #include <unistd.h>
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10
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11 char * alloc_concat(char * first, char * second)
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12 {
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13 int flen = strlen(first);
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14 int slen = strlen(second);
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15 char * ret = malloc(flen + slen + 1);
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16 memcpy(ret, first, flen);
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17 memcpy(ret+flen, second, slen+1);
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18 return ret;
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19 }
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20
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21 char * alloc_concat_m(int num_parts, char ** parts)
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22 {
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23 int total = 0;
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24 for (int i = 0; i < num_parts; i++) {
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25 total += strlen(parts[i]);
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26 }
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27 char * ret = malloc(total + 1);
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28 *ret = 0;
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29 for (int i = 0; i < num_parts; i++) {
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30 strcat(ret, parts[i]);
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31 }
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32 return ret;
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33 }
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34
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35 long file_size(FILE * f)
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36 {
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37 fseek(f, 0, SEEK_END);
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38 long fsize = ftell(f);
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39 fseek(f, 0, SEEK_SET);
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40 return fsize;
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41 }
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42
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43 char * strip_ws(char * text)
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44 {
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45 while (*text && (!isprint(*text) || isblank(*text)))
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46 {
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47 text++;
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48 }
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49 char * ret = text;
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50 text = ret + strlen(ret) - 1;
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51 while (text > ret && (!isprint(*text) || isblank(*text)))
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52 {
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53 *text = 0;
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54 text--;
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55 }
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56 return ret;
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57 }
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58
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59 char * split_keyval(char * text)
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60 {
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61 while (*text && !isblank(*text))
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62 {
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63 text++;
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64 }
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65 if (!*text) {
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66 return text;
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67 }
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68 *text = 0;
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69 return text+1;
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70 }
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71
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72 uint32_t nearest_pow2(uint32_t val)
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73 {
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74 uint32_t ret = 1;
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75 while (ret < val)
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76 {
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77 ret = ret << 1;
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78 }
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79 return ret;
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80 }
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81
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82 static char * exe_str;
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83
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84 void set_exe_str(char * str)
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85 {
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86 exe_str = str;
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87 }
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88
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89 #ifdef _WIN32
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90 #include <windows.h>
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91 #include <shlobj.h>
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92
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93 char * get_home_dir()
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94 {
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95 static char path[MAX_PATH];
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96 SHGetFolderPathA(NULL, CSIDL_PROFILE, NULL, 0, path);
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97 return path;
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98 }
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99
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100 char * get_exe_dir()
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101 {
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102 static char path[MAX_PATH];
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103 HMODULE module = GetModuleHandleA(NULL);
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104 GetModuleFileNameA(module, path, MAX_PATH);
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105
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106 int pathsize = strlen(path);
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107 for(char * cur = path + pathsize - 1; cur != path; cur--)
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108 {
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109 if (*cur == '\\') {
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110 *cur = 0;
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111 break;
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112 }
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113 }
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114 return path;
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115 }
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116
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117 #else
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118
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119 char * get_home_dir()
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120 {
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121 return getenv("HOME");
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122 }
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123
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124 char * readlink_alloc(char * path)
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125 {
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126 char * linktext = NULL;
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127 ssize_t linksize = 512;
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128 ssize_t cursize = 0;
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129 do {
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130 if (linksize > cursize) {
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131 cursize = linksize;
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132 if (linktext) {
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133 free(linktext);
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134 }
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135 }
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136 linktext = malloc(cursize);
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137 linksize = readlink(path, linktext, cursize-1);
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138 if (linksize == -1) {
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139 perror("readlink");
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140 free(linktext);
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141 return NULL;
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142 }
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143 } while ((linksize+1) > cursize);
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144 linktext[linksize] = 0;
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145 return linktext;
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146 }
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147
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148 char * get_exe_dir()
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149 {
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150 static char * exe_dir;
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151 if (!exe_dir) {
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152 char * cur;
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153 #ifdef HAS_PROC
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154 char * linktext = readlink_alloc("/proc/self/exe");
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155 if (!linktext) {
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156 goto fallback;
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157 }
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158 int linksize = strlen(linktext);
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159 for(cur = linktext + linksize - 1; cur != linktext; cur--)
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160 {
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161 if (*cur == '/') {
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162 *cur = 0;
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163 break;
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164 }
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165 }
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166 if (cur == linktext) {
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167 free(linktext);
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168 fallback:
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169 #endif
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170 if (!exe_str) {
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171 fputs("/proc/self/exe is not available and set_exe_str was not called!", stderr);
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172 }
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173 int pathsize = strlen(exe_str);
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174 for(cur = exe_str + pathsize - 1; cur != exe_str; cur--)
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175 {
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176 if (*cur == '/') {
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177 exe_dir = malloc(cur-exe_str+1);
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178 memcpy(exe_dir, exe_str, cur-exe_str);
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179 exe_dir[cur-exe_str] = 0;
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180 break;
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181 }
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182 }
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183 #ifdef HAS_PROC
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184 } else {
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185 exe_dir = linktext;
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186 }
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187 #endif
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188 }
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189 return exe_dir;
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190 }
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191
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192 #endif