HuntnGather – Blame information for rev 1
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Rev | Author | Line No. | Line |
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1 | office | 1 | /////////////////////////////////////////////////////////////////////////// |
2 | // Copyright (C) 2021 Wizardry and Steamworks - License: MIT // |
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3 | /////////////////////////////////////////////////////////////////////////// |
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4 | |||
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 <dirent.h> |
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9 | #include <signal.h> |
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10 | |||
11 | #include <sys/types.h> |
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12 | #include <sys/stat.h> |
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13 | |||
14 | #include <proto/dos.h> |
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15 | #include <proto/exec.h> |
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16 | |||
17 | #include "StringStack.h" |
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18 | |||
19 | #if defined ___AmigaOS___ |
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20 | #include "getopt.h" |
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21 | #endif |
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22 | |||
23 | |||
24 | #if !defined TRUE |
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25 | #define TRUE 1; |
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26 | #endif |
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27 | |||
28 | #if !defined FALSE |
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29 | #define FALSE 0; |
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30 | #endif |
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31 | |||
32 | #define MAX_MEM 524288 |
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33 | |||
34 | /*************************************************************************/ |
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35 | /* Version string used for querrying the program version. */ |
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36 | /*************************************************************************/ |
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37 | TEXT version_string[] = |
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38 | "\0$VER: Gather 1.2 "__DATE__" by Wizardry and Steamworks"; |
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39 | |||
40 | typedef struct { |
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41 | unsigned int dirs; |
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42 | unsigned int files; |
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43 | } stats; |
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44 | |||
45 | int run = TRUE; |
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46 | int verbose = TRUE; |
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47 | |||
48 | void SignalHandler(int sig) { |
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49 | // Toggle the run flag to stop execution. |
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50 | run = FALSE; |
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51 | } |
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52 | |||
53 | int compare(const void *a, const void *b) { |
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54 | const char **p = (const char **)a; |
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55 | const char **q = (const char **)b; |
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56 | return strcmp(*p, *q); |
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57 | } |
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58 | |||
59 | /* |
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60 | * |
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61 | * Sorts a database file lexicographically. |
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62 | */ |
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63 | void SortDatabase(char *dbFile) { |
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64 | FILE *fp; |
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65 | char *name = NULL; |
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66 | char *path = NULL; |
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67 | char **database; |
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68 | char c; |
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69 | int i; |
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70 | int side; |
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71 | unsigned int line; |
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72 | |||
73 | // Open database file for reading. |
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74 | if((fp = fopen(dbFile, "r")) == NULL) { |
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75 | fprintf(stderr, "Unable to open gather database for reading.\n"); |
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76 | return; |
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77 | } |
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78 | |||
79 | database = (char **) malloc(sizeof(char *)); |
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80 | name = (char *) malloc(sizeof(char)); |
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81 | path = (char *) malloc(sizeof(char)); |
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82 | line = 0; |
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83 | side = 0; |
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84 | i = 0; |
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85 | |||
86 | if(verbose) { |
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87 | fprintf(stdout, "Sorting database: '%s'\n", dbFile); |
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88 | } |
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89 | |||
90 | while(run && fscanf(fp, "%c", &c) == 1) { |
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91 | #if defined ___AmigaOS___ |
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92 | // Check if CTRL+C was pressed and abort the program. |
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93 | if(SetSignal(0L, SIGBREAKF_CTRL_C) & SIGBREAKF_CTRL_C) { |
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94 | run = FALSE; |
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95 | continue; |
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96 | } |
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97 | #endif |
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98 | switch(c) { |
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99 | case '\n': |
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100 | // Load up the name and path into the database variable. |
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101 | database = (char **) realloc(database, (line + 1) * sizeof(char *)); |
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102 | database[line] = (char *) malloc((strlen(name) + strlen(path) + 1 + 1) * sizeof(char)); |
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103 | sprintf(database[line], "%s\t%s", name, path); |
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104 | ++line; |
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105 | |||
106 | free(name); |
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107 | name = (char *) malloc(sizeof(char)); |
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108 | --side; |
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109 | i = 0; |
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110 | |||
111 | break; |
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112 | case '\t': |
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113 | free(path); |
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114 | path = (char *) malloc(sizeof(char)); |
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115 | ++side; |
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116 | i = 0; |
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117 | break; |
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118 | default: |
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119 | switch(side) { |
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120 | case 0: |
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121 | name = (char *) realloc(name, (i + 1 + 1) * sizeof(char)); |
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122 | name[i] = c; |
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123 | name[i + 1] = '\0'; |
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124 | break; |
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125 | case 1: |
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126 | path = (char *) realloc(path, (i + 1 + 1) * sizeof(char)); |
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127 | path[i] = c; |
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128 | path[i + 1] = '\0'; |
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129 | break; |
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130 | default: |
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131 | fprintf(stderr, "Database corrupted.\n"); |
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132 | break; |
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133 | } |
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134 | ++i; |
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135 | break; |
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136 | } |
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137 | } |
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138 | |||
139 | fclose(fp); |
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140 | |||
141 | // Sort the database. |
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142 | qsort(database, line, sizeof(char *), compare); |
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143 | |||
144 | // Write the database lines back to the database. |
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145 | if((fp = fopen(dbFile, "w+")) == NULL) { |
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146 | fprintf(stderr, "Unable to open gather database for writing.\n"); |
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147 | return; |
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148 | } |
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149 | |||
150 | for(i = 0; i < line; ++i) { |
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151 | fprintf(fp, "%s\n", database[i]); |
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152 | } |
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153 | |||
154 | free(database); |
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155 | fclose(fp); |
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156 | } |
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157 | |||
158 | /* |
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159 | * |
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160 | * Updates a database file "dbFile". |
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161 | */ |
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162 | void UpdateDatabase(char *dbFile, stringStack *dirStack, stats *stats) { |
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163 | FILE *fp; |
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164 | DIR *dir; |
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165 | struct dirent *dirEntry; |
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166 | struct stat dirStat; |
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167 | unsigned int size; |
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168 | char *path; |
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169 | char *subPath; |
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170 | |||
171 | if((fp = fopen(dbFile, "w+")) == NULL) { |
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172 | fprintf(stderr, "Unable to open gather database for writing.\n"); |
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173 | return; |
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174 | } |
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175 | |||
176 | while(run && !stringStackIsEmpty(dirStack)) { |
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177 | #if defined ___AmigaOS___ |
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178 | // Check if CTRL+C was pressed and abort the program. |
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179 | if(SetSignal(0L, SIGBREAKF_CTRL_C) & SIGBREAKF_CTRL_C) { |
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180 | run = FALSE; |
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181 | } |
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182 | #endif |
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183 | if((path = stringStackPop(dirStack)) == NULL) { |
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184 | return; |
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185 | } |
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186 | |||
187 | if((dir = opendir(path)) == NULL) { |
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188 | return; |
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189 | } |
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190 | |||
191 | while(run && (dirEntry = readdir(dir)) != NULL) { |
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192 | #if defined ___AmigaOS___ |
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193 | // Check if CTRL+C was pressed and abort the program. |
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194 | if(SetSignal(0L, SIGBREAKF_CTRL_C) & SIGBREAKF_CTRL_C) { |
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195 | run = FALSE; |
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196 | } |
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197 | #endif |
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198 | size = sizeof(path) + sizeof(dirEntry->d_name) + 1; |
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199 | switch(path[strlen(path) - 1]) { |
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200 | case '/': |
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201 | case ':': // This is a drive path. |
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202 | subPath = (char *) malloc(size); |
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203 | sprintf(subPath, "%s%s", path, dirEntry->d_name); |
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204 | break; |
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205 | default: |
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206 | subPath = (char *) malloc(size + 1); |
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207 | sprintf(subPath, "%s/%s", path, dirEntry->d_name); |
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208 | break; |
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209 | } |
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210 | stat(subPath, &dirStat); |
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211 | if(S_ISDIR(dirStat.st_mode)) { |
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212 | stringStackPush(dirStack, subPath); |
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213 | |||
214 | ++stats->dirs; |
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215 | |||
216 | if(verbose) { |
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217 | fprintf(stdout, |
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218 | "Gathered %d directories and %d files.\r", |
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219 | stats->dirs, |
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220 | stats->files); |
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221 | } |
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222 | |||
223 | free(subPath); |
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224 | continue; |
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225 | } |
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226 | |||
227 | // Write to database file. |
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228 | fprintf(fp, "%s\t%s\n", dirEntry->d_name, subPath); |
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229 | |||
230 | ++stats->files; |
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231 | |||
232 | if(verbose) { |
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233 | fprintf(stdout, |
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234 | "Gathered %d directories and %d files.\r", |
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235 | stats->dirs, |
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236 | stats->files); |
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237 | } |
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238 | |||
239 | free(subPath); |
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240 | } |
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241 | |||
242 | closedir(dir); |
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243 | free(path); |
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244 | } |
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245 | |||
246 | if(verbose) { |
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247 | fprintf(stdout, "\n"); |
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248 | } |
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249 | |||
250 | fclose(fp); |
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251 | |||
252 | } |
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253 | |||
254 | /* |
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255 | * |
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256 | * Gets the size of a database "dbFle". |
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257 | */ |
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258 | int GetDatabaseSize(char *dbFile) { |
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259 | FILE *fp; |
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260 | int size; |
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261 | |||
262 | if((fp = fopen(dbFile, "r")) == NULL) { |
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263 | fprintf(stderr, "Unable to open gather database for reading.\n"); |
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264 | fclose(fp); |
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265 | return 0; |
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266 | } |
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267 | |||
268 | fseek(fp, 0L, SEEK_END); |
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269 | size = ftell(fp); |
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270 | |||
271 | fclose(fp); |
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272 | return size; |
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273 | } |
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274 | |||
275 | /* |
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276 | * |
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277 | * Counts the lines in a database file "dbFile". |
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278 | */ |
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279 | int CountDatabaseLines(char *dbFile) { |
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280 | FILE *fp; |
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281 | int lines; |
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282 | char c; |
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283 | |||
284 | if((fp = fopen(dbFile, "r")) == NULL) { |
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285 | fprintf(stderr, "Unable to open gather database for reading.\n"); |
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286 | fclose(fp); |
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287 | return 0; |
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288 | } |
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289 | |||
290 | lines = 0; |
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291 | while(fscanf(fp, "%c", &c) == 1) { |
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292 | switch(c) { |
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293 | case '\n': |
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294 | ++lines; |
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295 | break; |
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296 | } |
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297 | } |
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298 | |||
299 | fclose(fp); |
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300 | |||
301 | return lines; |
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302 | } |
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303 | |||
304 | /* |
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305 | * |
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306 | * Creates "files" temporary filenames. |
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307 | */ |
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308 | char **CreateTempFiles(int files) { |
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309 | char **tmpNames; |
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310 | int count; |
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311 | |||
312 | tmpNames = (char **) malloc(files * sizeof(char *)); |
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313 | |||
314 | if(verbose) { |
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315 | fprintf(stdout, "Creating temporary files.\r"); |
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316 | } |
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317 | |||
318 | count = files; |
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319 | while(--count > -1) { |
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320 | #if defined ___AmigaOS___ |
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321 | // Check if CTRL+C was pressed and abort the program. |
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322 | if(SetSignal(0L, SIGBREAKF_CTRL_C) & SIGBREAKF_CTRL_C) { |
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323 | run = FALSE; |
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324 | } |
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325 | #endif |
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326 | tmpNames[count] = tmpnam(NULL); |
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327 | |||
328 | if(verbose) { |
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329 | fprintf(stdout, "Creating temporary files: %d%%\r", 100 - (int)(((float)count / files) * 100.0)); |
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330 | } |
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331 | } |
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332 | |||
333 | if(verbose) { |
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334 | fprintf(stdout, "\n"); |
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335 | } |
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336 | |||
337 | return tmpNames; |
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338 | } |
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339 | |||
340 | /* |
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341 | * |
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342 | * Writes lines from the database "dbFile" to temporary filenames "tmpNames". |
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343 | */ |
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344 | void WriteTempFiles(char *dbFile, char **tmpNames, int tmpFiles, int tmpLines, int total) { |
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345 | FILE *fp, *tp; |
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346 | char c; |
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347 | int lines; |
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348 | int linesWritten; |
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349 | |||
350 | if((fp = fopen(dbFile, "r")) == NULL) { |
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351 | fprintf(stderr, "Unable to open gather database for reading.\n"); |
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352 | return; |
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353 | } |
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354 | |||
355 | if((tp = fopen(tmpNames[--tmpFiles], "w+")) == NULL) { |
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356 | fprintf(stderr, "Unable to open temporary file '%s' for writing.\n", tmpNames[tmpFiles]); |
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357 | fclose(fp); |
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358 | return; |
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359 | } |
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360 | |||
361 | if(verbose) { |
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362 | fprintf(stdout, "Writing to temporary files.\r"); |
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363 | } |
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364 | |||
365 | linesWritten = 0; |
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366 | lines = 0; |
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367 | while(run && fscanf(fp, "%c", &c) == 1) { |
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368 | #if defined ___AmigaOS___ |
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369 | // Check if CTRL+C was pressed and abort the program. |
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370 | if(SetSignal(0L, SIGBREAKF_CTRL_C) & SIGBREAKF_CTRL_C) { |
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371 | run = FALSE; |
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372 | } |
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373 | #endif |
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374 | switch(c) { |
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375 | case '\n': |
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376 | // Increment the total written lines. |
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377 | ++linesWritten; |
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378 | |||
379 | if(verbose) { |
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380 | fprintf(stdout, "Writing to temporary files: %d%%.\r", (int)(((float)linesWritten / total) * 100.0)); |
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381 | } |
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382 | |||
383 | // Write the newline character back. |
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384 | if(fprintf(tp, "%c", c) != 1) { |
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385 | fprintf(stderr, "Unable to write to temporary file '%s'.\n", tmpNames[tmpFiles]); |
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386 | fclose(tp); |
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387 | fclose(fp); |
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388 | return; |
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389 | } |
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390 | // Switch to the next temporary file. |
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391 | if(++lines >= tmpLines) { |
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392 | // If there are no temporary files left then run till the end. |
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393 | if(tmpFiles - 1 < 0) { |
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394 | break; |
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395 | } |
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396 | |||
397 | // Close the previous temporary file and write to the next temporary file. |
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398 | fclose(tp); |
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399 | if((tp = fopen(tmpNames[--tmpFiles], "w+")) == NULL) { |
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400 | fprintf(stderr, "Unable to open temporary file '%s' for writing.\n", tmpNames[tmpFiles]); |
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401 | fclose(tp); |
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402 | fclose(fp); |
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403 | } |
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404 | lines = 0; |
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405 | break; |
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406 | } |
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407 | break; |
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408 | default: |
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409 | if(fprintf(tp, "%c", c) != 1) { |
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410 | fprintf(stderr, "Unable to write to temporary file '%s'.\n", tmpNames[tmpFiles]); |
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411 | fclose(tp); |
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412 | fclose(fp); |
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413 | return; |
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414 | } |
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415 | break; |
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416 | } |
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417 | } |
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418 | |||
419 | fprintf(stdout, "\n"); |
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420 | |||
421 | fclose(tp); |
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422 | fclose(fp); |
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423 | } |
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424 | |||
425 | /* |
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426 | * |
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427 | * Skips a line in a database file "fp". |
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428 | */ |
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429 | void SkipDatabaseLine(FILE *fp) { |
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430 | char c; |
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431 | |||
432 | while(fscanf(fp, "%c", &c) == 1) { |
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433 | if(c == '\n') { |
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434 | break; |
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435 | } |
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436 | } |
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437 | |||
438 | return; |
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439 | } |
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440 | |||
441 | /* |
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442 | * |
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443 | * Reads a line from the database file "fp". |
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444 | */ |
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445 | char *ReadDatabaseLine(FILE *fp) { |
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446 | char c; |
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447 | char *line; |
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448 | int chars; |
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449 | |||
450 | line = (char *) malloc(sizeof(char)); |
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451 | |||
452 | chars = 0; |
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453 | while(run && fscanf(fp, "%c", &c) == 1) { |
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454 | #if defined ___AmigaOS___ |
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455 | // Check if CTRL+C was pressed and abort the program. |
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456 | if(SetSignal(0L, SIGBREAKF_CTRL_C) & SIGBREAKF_CTRL_C) { |
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457 | run = FALSE; |
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458 | } |
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459 | #endif |
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460 | switch(c) { |
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461 | case '\n': |
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462 | // Rewind the file by the number of read characters. |
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463 | fseek(fp, -(chars + 1), SEEK_CUR); |
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464 | return line; |
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465 | default: |
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466 | line = (char *) realloc(line, (chars + 1 + 1) * sizeof(char)); |
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467 | line[chars] = c; |
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468 | line[chars + 1] = '\0'; |
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469 | break; |
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470 | } |
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471 | ++chars; |
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472 | } |
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473 | |||
474 | return NULL; |
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475 | } |
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476 | |||
477 | /* |
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478 | * |
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479 | * Merges temporary files "tmpNames" into a database "dbFile". |
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480 | */ |
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481 | void MergeDatabase(char *dbFile, char **tmpNames, int files, int lines) { |
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482 | FILE *fp; |
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483 | FILE **tp; |
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484 | int i; |
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485 | char *tmp; |
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486 | char *tmpMin; |
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487 | int idxMin; |
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488 | int count; |
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489 | |||
490 | if((fp = fopen(dbFile, "w+")) == NULL) { |
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491 | fprintf(stderr, "Unable to open gather database for writing.\n"); |
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492 | return; |
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493 | } |
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494 | |||
495 | // Allocate as many file pointers as temporary files. |
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496 | tp = (FILE **) malloc(files * sizeof(FILE *)); |
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497 | |||
498 | // Open all temporary files for reading. |
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499 | for(i = 0; i < files; ++i) { |
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500 | if((tp[i] = fopen(tmpNames[i], "r")) == NULL) { |
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501 | fprintf(stderr, "Unable to open temporary file '%s' for reading.\n", tmpNames[i]); |
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502 | // Close all temporary files. |
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503 | --i; |
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504 | while(i >= 0) { |
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505 | fclose(tp[i]); |
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506 | } |
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507 | return; |
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508 | } |
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509 | } |
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510 | |||
511 | if(verbose) { |
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512 | fprintf(stdout, "Merging all database lines in temporary files.\r"); |
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513 | } |
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514 | |||
515 | count = lines; |
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516 | idxMin = 0; |
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517 | while(run && --count > -1) { |
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518 | #if defined ___AmigaOS___ |
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519 | // Check if CTRL+C was pressed and abort the program. |
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520 | if(SetSignal(0L, SIGBREAKF_CTRL_C) & SIGBREAKF_CTRL_C) { |
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521 | run = FALSE; |
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522 | } |
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523 | #endif |
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524 | // Find the smallest line in all temporary files. |
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525 | if(verbose) { |
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526 | fprintf(stdout, "Merging all database lines in temporary files: %d%%.\r", 100 - (int)(((float)count / lines) * 100.0)); |
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527 | } |
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528 | |||
529 | tmpMin = NULL; |
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530 | for(i = 0; i < files; ++i) { |
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531 | tmp = ReadDatabaseLine(tp[i]); |
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532 | if(tmp == NULL) { |
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533 | free(tmp); |
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534 | continue; |
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535 | } |
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536 | if(tmpMin == NULL || strcmp(tmp, tmpMin) < 0) { |
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537 | tmpMin = (char *) malloc((strlen(tmp) + 1) * sizeof(char)); |
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538 | sprintf(tmpMin, "%s", tmp); |
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539 | // Remember the index of the file where the smallest entry has been found. |
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540 | idxMin = i; |
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541 | free(tmp); |
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542 | continue; |
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543 | } |
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544 | free(tmp); |
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545 | } |
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546 | |||
547 | // Forward the file where the smallest line was found. |
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548 | SkipDatabaseLine(tp[idxMin]); |
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549 | |||
550 | // Write the smallest line. |
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551 | if(tmpMin != NULL) { |
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552 | fprintf(fp, "%s\n", tmpMin); |
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553 | free(tmpMin); |
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554 | } |
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555 | } |
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556 | |||
557 | // Write out any remaining contents from the temporary files. |
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558 | for(i = 0; i < files; ++i) { |
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559 | tmp = ReadDatabaseLine(tp[i]); |
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560 | if(tmp == NULL) { |
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561 | continue; |
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562 | } |
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563 | fprintf(fp, "%s\n", tmp); |
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564 | } |
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565 | |||
566 | // Close and delete all temporary files. |
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567 | for(i = 0; i < files; ++i) { |
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568 | fclose(tp[i]); |
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569 | // Delete temporary file. |
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570 | remove(tmpNames[i]); |
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571 | } |
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572 | |||
573 | if(verbose) { |
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574 | fprintf(stdout, "\n"); |
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575 | } |
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576 | |||
577 | fclose(fp); |
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578 | } |
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579 | |||
580 | /* |
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581 | * |
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582 | * Indexes a "path" by creating a database "dbFile". |
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583 | */ |
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584 | void Gather(char *dbFile, char *path) { |
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585 | stringStack *stack = stringStackCreate(1); |
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586 | stats *stats = malloc(sizeof(stats)); |
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587 | char **tmpNames; |
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588 | int dbSize, dbLines, tmpFiles, tmpLines; |
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589 | int i; |
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590 | |||
591 | // Initialize metrics. |
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592 | stats->dirs = 0; |
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593 | stats->files = 0; |
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594 | |||
595 | // Push the first path onto the stack. |
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596 | stringStackPush(stack, path); |
||
597 | |||
598 | // Generate the database file. |
||
599 | UpdateDatabase(dbFile, stack, stats); |
||
600 | |||
601 | // Get the database metrics. |
||
602 | dbSize = GetDatabaseSize(dbFile); |
||
603 | dbLines = CountDatabaseLines(dbFile); |
||
604 | |||
605 | // Compute the amount of temporary files needed. |
||
606 | tmpFiles = dbSize / MAX_MEM; |
||
607 | |||
608 | // In case no temporary files are required, |
||
609 | // just sort the database and terminate. |
||
610 | if(tmpFiles == 0) { |
||
611 | SortDatabase(dbFile); |
||
612 | return; |
||
613 | } |
||
614 | |||
615 | tmpLines = dbLines / tmpFiles; |
||
616 | |||
617 | // Create temporary files. |
||
618 | if((tmpNames = CreateTempFiles(tmpFiles)) == NULL) { |
||
619 | fprintf(stderr, "Unable to create temporary files.\n"); |
||
620 | return; |
||
621 | } |
||
622 | |||
623 | // Write "tmpLines" to temporary files in "tmpFiles" from "dbFile". |
||
624 | WriteTempFiles(dbFile, tmpNames, tmpFiles, tmpLines, dbLines); |
||
625 | |||
626 | // Sort the temporary files. |
||
627 | for(i = 0; i < tmpFiles; ++i) { |
||
628 | SortDatabase(tmpNames[i]); |
||
629 | } |
||
630 | |||
631 | MergeDatabase(dbFile, tmpNames, tmpFiles, dbLines); |
||
632 | } |
||
633 | |||
634 | /* |
||
635 | * |
||
636 | * Main entry point. |
||
637 | */ |
||
638 | int main(int argc, char **argv) { |
||
639 | int option; |
||
640 | struct stat path; |
||
641 | |||
642 | // Bind handler to SIGINT. |
||
643 | signal(SIGINT, SignalHandler); |
||
644 | |||
645 | while((option = getopt(argc, argv, "hq")) != -1) { |
||
646 | switch(option) { |
||
647 | case 'q': |
||
648 | verbose = FALSE; |
||
649 | break; |
||
650 | case 'h': |
||
651 | fprintf(stdout, "SYNTAX: %s [-q] DIRECTORY", argv[0]); |
||
652 | break; |
||
653 | case '?': |
||
654 | fprintf(stderr, "Invalid option %ct.\n", optopt); |
||
655 | fprintf(stdout, "SYNTAX: %s [-q] DIRECTORY\n", argv[0]); |
||
656 | return 1; |
||
657 | } |
||
658 | } |
||
659 | |||
660 | if(optind > argc) { |
||
661 | fprintf(stdout, "SYNTAX: %s [-q] DIRECTORY\n", argv[0]); |
||
662 | return 1; |
||
663 | } |
||
664 | |||
665 | stat(argv[optind], &path); |
||
666 | |||
667 | if(!S_ISDIR(path.st_mode)) { |
||
668 | fprintf(stdout, "%s is not a directory.\n", argv[optind]); |
||
669 | return 1; |
||
670 | } |
||
671 | |||
672 | // Gather. |
||
673 | Gather("S:gather.db", argv[optind]); |
||
674 | |||
675 | return 0; |
||
676 | } |