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16
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1 #include <stdio.h>
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2 #include <ctype.h>
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3 #include <string.h>
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4
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5 #ifndef _WIN32
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6 # include <unistd.h>
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7 #endif
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8
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9 #ifndef __GNUC__
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10 # include "XGetopt.h"
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11 #endif
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12
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13 #include "define.h"
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14
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15 #define BUF_SIZE 4096
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16
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17 int usage();
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18 size_t get(void * buf, int size, unsigned int count, FILE *fp);
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19 int split_args(char *args, int **targ);
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20 int is_in(int a, int *b, int c);
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21
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22 int main(int argc, char** argv) {
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36
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23 int level = 0;
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24 int *i=NULL, x, ptr, stop=0, flag;
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25 char *fname, *buf, rec_type;
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26 unsigned char version;
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27 int *show_type=NULL, show_size=0;
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28 int *ex_type=NULL, ex_size=0;
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29 unsigned int funcname, filename, text, end, dtype, line, c;
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30 FILE *fp;
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31 struct _debug_file_rec_m mfile_rec;
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32 struct _debug_file_rec_l lfile_rec;
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33 char format = 'D'; // default
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34 while ((c = getopt(argc, argv, "f:t:x:")) != -1) {
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35 switch(c) {
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36 case 'f':
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37 // change the output format
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38 format = toupper(optarg[0]);
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39 break;
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40 case 't':
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41 //change the type of statements shown
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42 show_size = split_args(optarg, &show_type);
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43 // type = atoi(optarg);
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44 break;
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45 case 'x':
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46 // change the type of statements excluded
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47 ex_size = split_args(optarg, &ex_type);
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48 break;
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49 }
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50 }
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51 if (argc > optind) {
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52 fname = argv[optind++];
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53 } else {
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54 usage();
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55 exit(2);
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56 }
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57
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36
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58 fp = fopen(fname, "rb");
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59 if (fp == NULL) {
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60 printf("Error. couldn't open debug file\n");
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61 return 2;
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62 }
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63 if (get(&version, sizeof(char), 1, fp)==0) {
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64 printf("Error. could not read version byte from front of file");
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65 return 3;
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66 }
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67
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36
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68 if (version > DEBUG_VERSION) {
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69 printf("Version number is higher than the format I know about.");
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70 return 4;
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71 }
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72
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36
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73 buf = (char*) xmalloc(BUF_SIZE);
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74
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36
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75 while (!stop) {
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76 if (fread(&x, sizeof(int), 1, fp)<=0) break;
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77 ptr = 0;
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78 if (x > 0) {
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79 if (i) free(i);
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80 i = (int*)xmalloc(sizeof(int)*(x+1));
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81 // plus 1 cause we want to read the offset of the next index
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82 if (get(i, sizeof(int), x+1, fp)==0) {
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83 // we have reached the end of the debug file
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84 printf("oh dear. we must now end\n");
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85 break;
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86 }
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87 while (ptr < x) {
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88 fseek(fp,i[ptr++], SEEK_SET);
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89 get(&rec_type, 1, sizeof(char), fp);
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90 if (rec_type == 'L') {
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91 get(&lfile_rec, sizeof(lfile_rec), 1, fp);
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92 funcname=lfile_rec.funcname;
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93 filename=lfile_rec.filename;
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94 text = lfile_rec.text;
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95 end = lfile_rec.end;
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96 dtype = lfile_rec.type;
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97 line = lfile_rec.line;
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98 } else if (rec_type == 'M') {
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99 get(&mfile_rec, sizeof(mfile_rec), 1, fp);
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100 funcname = mfile_rec.funcname;
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101 filename = mfile_rec.filename;
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102 text = mfile_rec.text;
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103 end = mfile_rec.end;
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104 dtype = mfile_rec.type;
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105 line = mfile_rec.line;
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106 }
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107 if (dtype == DEBUG_FUNCENT_NO) level++;
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108 if ((show_type == NULL || is_in(dtype, show_type, show_size)) &&
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109 (ex_type == NULL || !is_in(dtype, ex_type, ex_size))) {
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110 c = 0; flag = 0;
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111 while (c < end) {
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112 int ii = (level-1) * 4;
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113 if (ii < 0) ii = 0;
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114 if (ii > 64) ii = 64;
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115 char indent[ii+1];
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116 memset(indent, ' ', ii);
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117 indent[ii] = '\0';
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118 if (c + (BUF_SIZE-1) < end) {
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119 get(buf, 1, BUF_SIZE-1, fp);
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120 buf[BUF_SIZE-1] = '\0';
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121 c += BUF_SIZE-1;
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122 } else {
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123 get(buf, 1, end-c, fp);
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124 buf[end-c] = '\0';
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125 c = end;
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126 }
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127 if (flag == 0) {
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128 if (format == 'I') { // indented text format
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129 char *b = buf+text;
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130 printf("%s %s/%s[%d]: ", indent, &buf[filename], &buf[funcname], line);
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131 while (b) {
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132 char *p = strchr(b, '\n');
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133 if (p) {
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134 *p = '\0';
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135 printf("%s\n%s ", b, indent);
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136 b = p + 1;
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137 }
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138 else {
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139 printf("%s", b);
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140 b = NULL;
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141 }
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142 }
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143 }
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144 else if (format == 'T') { // text format
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145 printf("%s/%s[%d]: %s", &buf[filename], &buf[funcname], line, &buf[text]);
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146 } else {
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147 printf("Type: %d\nFile[line]: %s[%d]\nFunction:%s\nText:%s", dtype,
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148 &buf[filename], line, &buf[funcname], &buf[text]);
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149 }
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150 flag = 1;
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151 } else {
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152 if (format == 'I') {
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153 char *b = buf;
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154 while (b) {
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155 char *p = strchr(b, '\n');
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156 if (p) {
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157 *p = '\0';
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158 printf("%s\n%s ", b, indent);
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159 b = p + 1;
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160 }
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161 else {
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162 printf("%s", b);
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163 b = NULL;
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164 }
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165 }
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166 }
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167 else printf("%s", buf);
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168 }
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169 }
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170 printf("\n");
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171 }
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172 if (dtype == DEBUG_FUNCRET_NO) level--;
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173 }
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174 if (fseek(fp, i[ptr], SEEK_SET)==-1) {
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175 printf("finished\n");
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176 break;
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177 }
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178 } else {
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179 printf("...no more items\n");
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180 break;
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181 }
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16
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182 }
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36
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183 free(buf);
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184 fclose(fp);
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185 return 0;
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16
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186 }
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36
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187
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16
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188 size_t get(void * buf, int size, unsigned int count, FILE *fp) {
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36
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189 size_t z;
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190 if ((z=fread(buf,size, count, fp)) < count) {
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191 printf("Read Failed! (size=%d, count=%d,z=%ld)\n", size, count, (long)z);
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192 exit(1);
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193 }
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194 return z;
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16
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195 }
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196
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197 int usage() {
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36
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198 printf("readlog -t[show_type] -x[exclude_type] -f[format] filename\n");
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199 printf("\tformat:\n\t\tt: text log format\n");
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200 printf("\t\ti: indented text log format\n");
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201 printf("\tshow_type:\n\t\tcomma separated list of types to show "
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202 "[ie, 2,4,1,6]\n");
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203 printf("\texclude_type:\n\t\tcomma separated list of types to exclude "
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204 "[ie, 1,5,3,7]\n");
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205 return 0;
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206 }
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207
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36
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208
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209 int split_args(char *args, int **targ) {
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36
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210 int count = 1, *i, x, z;
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211 char *tmp = args, *y;
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212 if (*targ != NULL) {
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213 free(*targ);
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214 }
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215 // find the number of tokens in the string. Starting
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216 // from 1 cause there will always be one
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217 while ((tmp = strchr(tmp, ',')) != NULL) {
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218 tmp++; count++;
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219 }
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220 *targ = (int*)xmalloc(count * sizeof(int));
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221 i = *targ; // for convienience
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222 tmp = args;
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223 z = 0;
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224 for (x = 0; x < count; x++) {
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225 y = strtok(tmp, ",");
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226 tmp = NULL; // must be done after first call
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227 if (y != NULL) {
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228 i[x] = atoi(y);
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229 z++;
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230 }
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231 }
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232 return z;
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16
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233 }
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234
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36
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235
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236 // checks to see if the first arg is in the array of the second arg,
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237 // the size of which is specified with the third arg. If the second
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36
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238 // arg is NULL, then it is obvious that it is not there.
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16
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239 int is_in(int a, int *b, int c){
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36
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240 int d = 0;
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241 if (b == NULL || c == 0) { // no array or no items in array
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242 return 0;
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243 }
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244 while (d < c) {
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245 if (a == b[d]) return 1;
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246 d++;
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247 }
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248 return 0;
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16
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249 }
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