1 | #include "singular_resourcesconfig.h" |
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2 | #include "feResource.h" |
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3 | #include "feFopen.h" |
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4 | |
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5 | #include <stdio.h> |
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6 | #include <stdlib.h> |
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7 | #include <string.h> |
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8 | #include <sys/types.h> |
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9 | #include <sys/stat.h> |
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10 | #include <unistd.h> |
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11 | #include <errno.h> |
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12 | |
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13 | #if defined(HAVE_PWD_H) && defined(HAVE_GETPWNAM) |
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14 | #include <pwd.h> |
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15 | #endif |
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16 | |
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17 | |
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18 | |
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19 | |
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20 | extern "C" { |
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21 | void (*WerrorS_callback)(const char *s) = NULL; |
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22 | void (*PrintS_callback)(const char *s) = NULL; |
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23 | short errorreported=0; |
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24 | void WerrorS(const char *s) |
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25 | { |
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26 | if (WerrorS_callback == NULL) |
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27 | { |
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28 | fwrite(" ? ",1,5,stderr); |
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29 | fwrite((char *)s,1,strlen((char *)s),stderr); |
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30 | fwrite("\n",1,1,stderr); |
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31 | fflush(stderr); |
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32 | } |
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33 | else |
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34 | { |
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35 | WerrorS_callback(s); |
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36 | } |
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37 | errorreported = 1; |
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38 | } |
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39 | } |
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40 | |
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41 | /***************************************************************** |
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42 | * |
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43 | * File handling |
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44 | * |
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45 | *****************************************************************/ |
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46 | |
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47 | FILE * feFopen(const char *path, const char *mode, char *where, |
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48 | short useWerror, short path_only) |
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49 | { |
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50 | char longpath[MAXPATHLEN]; |
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51 | if (path[0]=='~') |
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52 | { |
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53 | if (path[1] == DIR_SEP) |
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54 | { |
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55 | const char* home = getenv("HOME"); |
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56 | #ifdef __CUGWIN__ |
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57 | if ((home==NULL)||(!access(home,X_OK))) |
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58 | home = getenv("SINGHOME"); |
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59 | #endif |
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60 | if (home != NULL) |
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61 | { |
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62 | strcpy(longpath, home); |
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63 | strcat(longpath, &(path[1])); |
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64 | path = longpath; |
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65 | } |
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66 | } |
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67 | #if defined(HAVE_PWD_H) && defined(HAVE_GETPWNAM) |
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68 | else |
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69 | { |
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70 | char* dir_sep; |
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71 | struct passwd *pw_entry; |
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72 | strcpy (longpath, path); |
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73 | dir_sep = strchr(longpath, DIR_SEP); |
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74 | if (dir_sep==NULL) |
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75 | { |
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76 | char buf[256]; |
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77 | strcpy(buf,"illegal ~ in filename >>"); |
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78 | strncat(buf,longpath,235); |
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79 | strcat(buf,"<<"); |
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80 | WerrorS(buf); |
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81 | return NULL; |
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82 | } |
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83 | *dir_sep = '\0'; |
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84 | pw_entry = getpwnam(&longpath[1]); |
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85 | if (pw_entry != NULL) |
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86 | { |
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87 | strcpy(longpath, pw_entry->pw_dir); |
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88 | dir_sep = strchr((char *)path, DIR_SEP); |
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89 | strcat(longpath, dir_sep); |
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90 | path = longpath; |
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91 | } |
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92 | } |
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93 | #endif |
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94 | } |
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95 | FILE * f=NULL; |
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96 | if (! path_only) |
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97 | { |
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98 | struct stat statbuf; |
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99 | int res = -1; |
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100 | do |
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101 | { |
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102 | res = stat(path,&statbuf); |
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103 | } while((res < 0) and (errno == EINTR)); |
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104 | if ((res == 0) |
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105 | && (S_ISREG(statbuf.st_mode))) |
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106 | f = myfopen(path,mode); |
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107 | } |
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108 | if (where!=NULL) strcpy(where,path); |
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109 | if ((*mode=='r') && |
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110 | (path[0]!=DIR_SEP) && |
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111 | ! (path[0] == '.' && path[1] == DIR_SEP) && |
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112 | (f==NULL)) |
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113 | { |
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114 | char found = 0; |
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115 | char* spath = feResource('s'); |
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116 | char *s; |
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117 | |
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118 | if (where==NULL) s=(char *)malloc(1024); |
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119 | else s=where; |
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120 | |
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121 | if (spath!=NULL) |
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122 | { |
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123 | char *p,*q; |
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124 | p = spath; |
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125 | while( (q=strchr(p, fePathSep)) != NULL) |
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126 | { |
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127 | *q = '\0'; |
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128 | strcpy(s,p); |
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129 | *q = fePathSep; |
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130 | strcat(s, DIR_SEPP); |
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131 | strcat(s, path); |
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132 | if(!access(s, R_OK)) { found++; break; } |
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133 | p = q+1; |
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134 | } |
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135 | if(!found) |
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136 | { |
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137 | strcpy(s,p); |
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138 | strcat(s, DIR_SEPP); |
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139 | strcat(s, path); |
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140 | } |
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141 | f=myfopen(s,mode); |
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142 | if (f!=NULL) |
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143 | { |
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144 | if (where==NULL) free(s); |
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145 | return f; |
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146 | } |
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147 | } |
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148 | else |
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149 | { |
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150 | if (where!=NULL) strcpy(s/*where*/,path); |
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151 | f=myfopen(path,mode); |
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152 | } |
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153 | if (where==NULL) free(s); |
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154 | } |
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155 | if ((f==NULL)&&(useWerror)) |
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156 | { |
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157 | char buf[256]; |
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158 | strcpy(buf,"cannot open `"); |
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159 | strncat(buf,path,240); |
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160 | strcat(buf,"`"); |
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161 | WerrorS(buf); |
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162 | } |
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163 | return f; |
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164 | } |
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165 | |
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166 | // Make sure that mode contains binary option |
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167 | FILE* myfopen(const char *path, const char *mode) |
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168 | { |
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169 | #if (defined(__CUGWIN__)) |
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170 | char mmode[4]; |
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171 | int i; |
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172 | int done = 0; |
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173 | |
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174 | for (i=0;;i++) |
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175 | { |
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176 | mmode[i] = mode[i]; |
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177 | if (mode[i] == '\0') break; |
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178 | if (mode[i] == 'w') done = 1; |
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179 | if (mode[i] == 'a') done = 1; |
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180 | if (mode[i] == 'b') done = 1; |
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181 | } |
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182 | |
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183 | if (! done) |
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184 | { |
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185 | mmode[i] = 'b'; |
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186 | mmode[i+1] = '\0'; |
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187 | } |
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188 | return fopen(path, mmode); |
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189 | #else |
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190 | return fopen(path, mode); |
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191 | #endif |
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192 | } |
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193 | // replace "\r\n" by " \n" and "\r" by "\n" |
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194 | |
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195 | size_t myfread(void *ptr, size_t size, size_t nmemb, FILE *stream) |
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196 | { |
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197 | size_t got = fread(ptr, size, nmemb, stream) * size; |
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198 | size_t i; |
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199 | |
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200 | for (i=0; i<got; i++) |
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201 | { |
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202 | if ( ((char*) ptr)[i] == '\r') |
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203 | { |
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204 | if (i+1 < got && ((char*) ptr)[i+1] == '\n') |
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205 | ((char*) ptr)[i] = ' '; |
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206 | else |
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207 | ((char*) ptr)[i] = '\n'; |
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208 | } |
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209 | } |
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210 | return got; |
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211 | } |
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