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annotate util.c @ 759:c47e1750c264

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Use MAP_32BIT on Linux since my hint seems to be ignored
author Michael Pavone <pavone@retrodev.com>
date Sun, 28 Jun 2015 10:21:51 -0700
parents fc68992cf18d
children 206c449eaa81
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
495
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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
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6 #include <sys/types.h>
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7 #include <sys/stat.h>
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8 #include <unistd.h>
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9
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10 char * alloc_concat(char * first, char * second)
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11 {
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12 int flen = strlen(first);
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13 int slen = strlen(second);
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14 char * ret = malloc(flen + slen + 1);
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15 memcpy(ret, first, flen);
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16 memcpy(ret+flen, second, slen+1);
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17 return ret;
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18 }
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19
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20 char * alloc_concat_m(int num_parts, char ** parts)
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21 {
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22 int total = 0;
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23 for (int i = 0; i < num_parts; i++) {
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24 total += strlen(parts[i]);
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25 }
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26 char * ret = malloc(total + 1);
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27 *ret = 0;
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28 for (int i = 0; i < num_parts; i++) {
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29 strcat(ret, parts[i]);
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30 }
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31 return ret;
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32 }
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33
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34 long file_size(FILE * f)
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35 {
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36 fseek(f, 0, SEEK_END);
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37 long fsize = ftell(f);
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38 fseek(f, 0, SEEK_SET);
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39 return fsize;
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40 }
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41
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42 char * strip_ws(char * text)
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43 {
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44 while (*text && (!isprint(*text) || isblank(*text)))
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45 {
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46 text++;
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47 }
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48 char * ret = text;
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49 text = ret + strlen(ret) - 1;
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50 while (text > ret && (!isprint(*text) || isblank(*text)))
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51 {
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52 *text = 0;
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53 text--;
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54 }
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55 return ret;
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56 }
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57
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58 char * split_keyval(char * text)
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59 {
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60 while (*text && !isblank(*text))
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61 {
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62 text++;
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63 }
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64 if (!*text) {
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65 return text;
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66 }
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67 *text = 0;
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68 return text+1;
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69 }
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70
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71 static char * exe_str;
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72
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73 void set_exe_str(char * str)
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74 {
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75 exe_str = str;
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76 }
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77
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78 #ifdef _WIN32
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79 #include "Shlobj.h"
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80 #include "Windows.h"
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81
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82 char * get_home_dir()
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83 {
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84 static char path[MAX_PATH];
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85 SHGetFolderPathA(NULL, CSIDL_PROFILE, NULL, 0, path);
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86 return path;
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87 }
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88
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89 char * get_exe_dir()
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90 {
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91 static char path[MAX_PATH];
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92 HMODULE module = GetModuleHandleA(NULL);
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93 GetModuleFileNameA(module, path, MAX_PATH);
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94
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95 int pathsize = strlen(path);
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96 for(char * cur = path + pathsize - 1; cur != path; cur--)
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97 {
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98 if (*cur == '\\') {
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99 *cur = 0;
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100 break;
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101 }
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102 }
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103 return path;
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104 }
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105
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106 #else
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107
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108 char * get_home_dir()
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109 {
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110 return getenv("HOME");
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111 }
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112
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113 char * readlink_alloc(char * path)
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114 {
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115 char * linktext = NULL;
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116 ssize_t linksize = 512;
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117 ssize_t cursize = 0;
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118 do {
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119 if (linksize > cursize) {
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120 cursize = linksize;
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121 if (linktext) {
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122 free(linktext);
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123 }
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124 }
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125 linktext = malloc(cursize);
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126 linksize = readlink(path, linktext, cursize-1);
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127 if (linksize == -1) {
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128 perror("readlink");
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129 free(linktext);
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130 return NULL;
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131 }
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132 } while ((linksize+1) > cursize);
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133 linktext[linksize] = 0;
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134 return linktext;
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135 }
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136
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137 char * get_exe_dir()
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138 {
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139 static char * exe_dir;
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140 if (!exe_dir) {
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141 char * linktext = readlink_alloc("/proc/self/exe");
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142 if (!linktext) {
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143 goto fallback;
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144 }
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145 char * cur;
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146 int linksize = strlen(linktext);
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147 for(cur = linktext + linksize - 1; cur != linktext; cur--)
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148 {
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149 if (*cur == '/') {
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150 *cur = 0;
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151 break;
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152 }
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153 }
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154 if (cur == linktext) {
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155 free(linktext);
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156 fallback:
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157 if (!exe_str) {
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158 fputs("/proc/self/exe is not available and set_exe_str was not called!", stderr);
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159 }
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160 int pathsize = strlen(exe_str);
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161 for(cur = exe_str + pathsize - 1; cur != exe_str; cur--)
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162 {
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163 if (*cur == '/') {
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164 exe_dir = malloc(cur-exe_str+1);
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165 memcpy(exe_dir, exe_str, cur-exe_str);
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166 exe_dir[cur-exe_str] = 0;
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167 break;
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168 }
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169 }
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170 } else {
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171 exe_dir = linktext;
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172 }
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173 }
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174 return exe_dir;
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175 }
742
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176
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177 #endif