src/scanner.c

Mon, 27 Jul 2020 17:19:56 +0200

author
Mike Becker <universe@uap-core.de>
date
Mon, 27 Jul 2020 17:19:56 +0200
changeset 61
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parent 60
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child 66
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permissions
-rw-r--r--

adds option to compute individual sums

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1 /*
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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3 * Copyright 2018 Mike Becker. All rights reserved.
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4 *
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5 * Redistribution and use in source and binary forms, with or without
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6 * modification, are permitted provided that the following conditions are met:
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7 *
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8 * 1. Redistributions of source code must retain the above copyright
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9 * notice, this list of conditions and the following disclaimer.
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10 *
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11 * 2. Redistributions in binary form must reproduce the above copyright
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12 * notice, this list of conditions and the following disclaimer in the
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13 * documentation and/or other materials provided with the distribution.
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14 *
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15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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25 */
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26
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27
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28 #include "scanner.h"
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29 #include "bfile_heuristics.h"
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30 #include "regex_parser.h"
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31 #include <sys/stat.h>
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32
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33 typedef struct filelist filelist_t;
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34
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35 struct filelist {
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36 char *displayname;
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37 int displayname_len;
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38 char *filename;
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39 char *ext;
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40 int st_mode;
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41 filelist_t *next;
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42 };
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43
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44 static bool testSuffix(char* filename, string_list_t* list) {
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45 bool ret = false;
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46 int tokenlen, fnamelen = strlen(filename);
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47 for (int t = 0 ; t < list->count ; t++) {
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48 tokenlen = strlen(list->items[t]);
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49 if (fnamelen >= tokenlen && tokenlen > 0) {
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50 if (strncmp(filename+fnamelen-tokenlen,
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51 list->items[t], tokenlen) == 0) {
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52 ret = true;
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53 break;
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54 }
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55 }
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56 }
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57 return ret;
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58 }
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59
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60 static void addLinesPerExtension(scanresult_ext_t* result,
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61 char* ext, int lines) {
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62 if (!result) return;
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63
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64 if (!ext) ext = "w/o";
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65
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66 for (int i = 0 ; i < result->count ; i++) {
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67 if (strcasecmp(result->extensions[i], ext) == 0) {
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68 result->lines[i] += lines;
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69 return;
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70 }
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71 }
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72
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73 if (result->count == result->capacity) {
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74 int newcap = result->capacity+8;
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75 char** extarr = realloc(result->extensions, newcap*sizeof(char*));
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76 int* linesarr = realloc(result->lines, newcap*sizeof(int));
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77 if (!extarr || !linesarr) {
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78 fprintf(stderr, "Memory allocation error.\n");
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79 abort();
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80 }
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81 result->extensions = extarr;
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82 result->lines = linesarr;
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83 result->capacity = newcap;
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84 }
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85
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86 result->extensions[result->count] = strdup(ext);
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87 result->lines[result->count] = lines;
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88 result->count++;
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89 }
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90
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91 scanresult_t* new_scanresult_t(settings_t* settings) {
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92 scanresult_t* result = calloc(1, sizeof(scanresult_t));
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93 if (settings->individual_sums) {
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94 result->ext = calloc(1, sizeof(scanresult_ext_t));
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95 }
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96 return result;
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97 }
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98
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99 void destroy_scanresult_t(scanresult_t* result) {
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100 if (result->ext) {
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101 if (result->ext->count > 0) {
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102 for (int i = 0 ; i < result->ext->count ; i++) {
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103 free(result->ext->extensions[i]);
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104 }
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105 free(result->ext->extensions);
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106 free(result->ext->lines);
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107 }
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108 free(result->ext);
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109 }
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110 free(result);
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111 }
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112
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113
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114 static filelist_t *buildFileList(scanner_t scanner, settings_t* settings,
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115 filelist_t* list) {
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116
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117 DIR *dirf;
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118 struct dirent *entry;
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119 struct stat statbuf;
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120
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121 if ((dirf = opendir(scanner.dir)) == NULL) {
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122 fprintf(stderr, "%s - ", scanner.dir);
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123 perror("Directory access failed");
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124 return 0;
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125 }
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126
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127 while ((entry = readdir(dirf)) != NULL) {
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128 if (strcmp(entry->d_name, ".") != 0 && strcmp(entry->d_name, "..") != 0) {
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129
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130 /* Create new filelist entry */
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131 filelist_t *newentry = (filelist_t*) malloc(sizeof(filelist_t));
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132 newentry->next = NULL;
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133
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134 newentry->displayname_len = strlen(entry->d_name);
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135 newentry->displayname = (char*) malloc(newentry->displayname_len+1);
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136 memcpy(newentry->displayname, entry->d_name, newentry->displayname_len);
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137 newentry->displayname[newentry->displayname_len] = 0;
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138
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139 newentry->st_mode = 0;
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140
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141 /* Construct absolute pathname string */
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142 size_t dirnamelen = strlen(scanner.dir);
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143 char *filename = (char*) malloc(2+dirnamelen+newentry->displayname_len);
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144 memcpy(filename, scanner.dir, dirnamelen);
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145 filename[dirnamelen] = settings->fileSeparator;
42
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146 memcpy(filename+dirnamelen+1, entry->d_name, newentry->displayname_len);
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147 filename[1+dirnamelen+newentry->displayname_len] = 0;
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148 newentry->filename = filename;
61
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149
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150 /* Obtain file extension */
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151 newentry->ext = strrchr(newentry->displayname, '.');
14
ee9333c91dda some minor fixes + makefile now injects revisionnumber into cline.h
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diff changeset
152
22
4508da679ffb completed binary file heuristics
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153 /* Check for subdirectory */
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154 if (stat(filename, &statbuf) == 0) {
42
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155 newentry->st_mode = statbuf.st_mode;
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156 } else {
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157 perror(" Error in stat call");
3
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158 continue;
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159 }
42
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160
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161 if (list) {
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162 // create fake root to have a pointer on the true root
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163 filelist_t root;
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164 root.next = list;
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165 filelist_t *parent = &root;
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166 while (parent->next &&
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167 (strcasecmp(parent->next->displayname, newentry->displayname) < 0 ||
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168 (!S_ISDIR(newentry->st_mode) && S_ISDIR(parent->next->st_mode))
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169 ) &&
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170 (!S_ISDIR(newentry->st_mode) || S_ISDIR(parent->next->st_mode))
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171 ) {
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172 parent = parent->next;
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173 }
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174 newentry->next = parent->next;
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175 parent->next = newentry;
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176 list = root.next;
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177 } else {
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178 list = newentry;
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179 }
41
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180 }
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181 }
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182
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183 closedir(dirf);
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184
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185 return list;
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186 }
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187
60
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188 void scanDirectory(scanner_t scanner, settings_t* settings,
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189 string_list_t* output, scanresult_t* result) {
41
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190
61
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191 result->lines = 0;
60
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192 int a;
41
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193 bool bfile;
44
9574a181ec26 line sum per directory now displayed + directories without matching files are no longer displayed when -m is used + new buffering strategy replaces stream hack when -V is used
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194 char *outbuf;
41
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195
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196 filelist_t *filelist = buildFileList(scanner, settings, NULL);
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197
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198 while (filelist != NULL) {
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199
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200 /* Scan subdirectories */
42
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201 if (!S_ISREG(filelist->st_mode)) {
44
9574a181ec26 line sum per directory now displayed + directories without matching files are no longer displayed when -m is used + new buffering strategy replaces stream hack when -V is used
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diff changeset
202 if (settings->recursive && S_ISDIR(filelist->st_mode)) {
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diff changeset
203 string_list_t *recoutput = new_string_list_t();
60
69be673a4fd0 preparing changes for individual sum feature
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diff changeset
204 scanresult_t recresult;
61
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205 recresult.ext = result->ext;
60
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diff changeset
206 scanDirectory(
44
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diff changeset
207 (scanner_t) {filelist->filename, scanner.spaces+1},
60
69be673a4fd0 preparing changes for individual sum feature
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diff changeset
208 settings, recoutput, &recresult);
61
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diff changeset
209 result->lines += recresult.lines;
44
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diff changeset
210 if (!settings->matchesOnly || recoutput->count > 0) {
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diff changeset
211 outbuf = (char*) malloc(81);
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diff changeset
212 snprintf(outbuf, 81, "%*s/%*s%13d lines\n",
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diff changeset
213 filelist->displayname_len+scanner.spaces, filelist->displayname,
60
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diff changeset
214 60-filelist->displayname_len-scanner.spaces-1, "",
61
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diff changeset
215 recresult.lines);
44
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diff changeset
216 add_string(output, outbuf);
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diff changeset
217 for (int i = 0 ; i < recoutput->count ; i++) {
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diff changeset
218 add_string(output, recoutput->items[i]);
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diff changeset
219 }
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220 }
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parents: 43
diff changeset
221 destroy_string_list_t(recoutput);
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diff changeset
222 } else {
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diff changeset
223 outbuf = (char*) malloc(81);
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diff changeset
224 snprintf(outbuf, 81, "%*s\n", filelist->displayname_len+scanner.spaces,
41
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diff changeset
225 filelist->displayname);
44
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diff changeset
226 add_string(output, outbuf);
41
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227 }
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diff changeset
228 } else {
30
d642fdb6745e allow parallel use of -s and -S
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diff changeset
229 if ((settings->includeSuffixes->count == 0
41
c2e73e175341 replaced direct scanning of directories with a two-step approach (first: create filename list, second: scan)
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diff changeset
230 || testSuffix(filelist->displayname, settings->includeSuffixes))
c2e73e175341 replaced direct scanning of directories with a two-step approach (first: create filename list, second: scan)
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diff changeset
231 && !testSuffix(filelist->displayname, settings->excludeSuffixes)) {
c2e73e175341 replaced direct scanning of directories with a two-step approach (first: create filename list, second: scan)
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diff changeset
232
25
802c5382f499 Added line buffer (and warning message - there is no regexp parser, though)
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diff changeset
233 /* Count lines */
60
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diff changeset
234 int lines = 0;
25
802c5382f499 Added line buffer (and warning message - there is no regexp parser, though)
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diff changeset
235 bfile = false;
802c5382f499 Added line buffer (and warning message - there is no regexp parser, though)
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parents: 23
diff changeset
236 bfile_reset(settings->bfileHeuristics);
54
76d46533b9a9 regex parser was not properly reset before each file, sometimes resulting in wrong line counts, when the previous scanned file ended with a match
Mike Becker <universe@uap-core.de>
parents: 48
diff changeset
237 regex_parser_reset(settings->regex);
27
95a958e3de88 added regexp_parser struct and compile function
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parents: 25
diff changeset
238 char line_buffer[REGEX_MAX_LINELENGTH];
25
802c5382f499 Added line buffer (and warning message - there is no regexp parser, though)
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parents: 23
diff changeset
239 int line_buffer_offset = 0;
802c5382f499 Added line buffer (and warning message - there is no regexp parser, though)
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diff changeset
240
41
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diff changeset
241 FILE *file = fopen(filelist->filename, "r");
3
510d6b198dde Moved some functions to functions.c
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parents: 1
diff changeset
242 if (file == NULL) {
44
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diff changeset
243 outbuf = (char*) malloc(81);
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diff changeset
244 snprintf(outbuf, 81, "%*s", filelist->displayname_len+scanner.spaces,
41
c2e73e175341 replaced direct scanning of directories with a two-step approach (first: create filename list, second: scan)
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diff changeset
245 filelist->displayname);
44
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diff changeset
246 add_string(output, outbuf);
3
510d6b198dde Moved some functions to functions.c
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diff changeset
247 perror(" File acces failed");
41
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diff changeset
248 } else {
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diff changeset
249 do {
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diff changeset
250 a = fgetc(file);
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diff changeset
251
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diff changeset
252 bfile = bfile_check(settings->bfileHeuristics, a);
3
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diff changeset
253
41
c2e73e175341 replaced direct scanning of directories with a two-step approach (first: create filename list, second: scan)
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diff changeset
254 if (a == 10 || a == EOF) {
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diff changeset
255 line_buffer[line_buffer_offset] = 0;
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diff changeset
256 if (regex_parser_do(settings->regex, line_buffer) == 0) {
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diff changeset
257 /* Only subtract lines when matching has finished */
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diff changeset
258 if (!regex_parser_matching(settings->regex)) {
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diff changeset
259 lines -= settings->regex->matched_lines;
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260 }
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261 }
21
91e0890464b0 implemented bfile heuristics option + TODO: implement algorithm
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parents: 20
diff changeset
262
41
c2e73e175341 replaced direct scanning of directories with a two-step approach (first: create filename list, second: scan)
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diff changeset
263 line_buffer_offset = 0;
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diff changeset
264 lines++;
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diff changeset
265 } else {
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diff changeset
266 if (line_buffer_offset < REGEX_MAX_LINELENGTH) {
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diff changeset
267 line_buffer[line_buffer_offset] = a;
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diff changeset
268 line_buffer_offset++;
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diff changeset
269 } else {
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diff changeset
270 line_buffer[line_buffer_offset-1] = 0;
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271 settings->confusing_lnlen = true;
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272 }
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273 }
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274 } while (!bfile && a != EOF);
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275 fclose(file);
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276
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277 /* Print and sum line count */
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278 if (bfile) {
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279 if (!settings->matchesOnly) {
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280 outbuf = (char*) malloc(81);
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281 snprintf(outbuf, 81,
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282 "%*s%*s%19s\n", filelist->displayname_len+scanner.spaces,
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283 filelist->displayname,
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284 60-filelist->displayname_len-scanner.spaces, "", "binary");
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285 add_string(output, outbuf);
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286 }
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287 } else {
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288 addLinesPerExtension(result->ext, filelist->ext, lines);
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289 result->lines += lines;
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290 outbuf = (char*) malloc(81);
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291 snprintf(outbuf, 81, "%*s%*s%13d lines\n",
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292 filelist->displayname_len+scanner.spaces, filelist->displayname,
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293 60-filelist->displayname_len-scanner.spaces, "", lines);
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294 add_string(output, outbuf);
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295 }
21
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296 }
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297 } else {
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298 if (!settings->matchesOnly) {
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299 /* Print hint */
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300 outbuf = (char*) malloc(81);
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301 snprintf(outbuf, 81, "%*s%*s%19s\n",
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302 filelist->displayname_len+scanner.spaces, filelist->displayname,
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303 60-filelist->displayname_len-scanner.spaces, "", "no match");
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304 add_string(output, outbuf);
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305 }
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306 }
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307 }
41
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308
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309 free(filelist->filename);
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310 free(filelist->displayname);
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311 filelist_t *freethis = filelist;
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312 filelist = filelist->next;
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313 free(freethis);
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314 }
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315 }

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