OpenWrt – Blame information for rev 2
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Rev | Author | Line No. | Line |
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1 | office | 1 | %option nostdinit noyywrap never-interactive full ecs |
2 | %option 8bit nodefault perf-report perf-report |
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3 | %option noinput |
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4 | %x COMMAND HELP STRING PARAM |
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5 | %{ |
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6 | /* |
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7 | * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org> |
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8 | * Released under the terms of the GNU GPL v2.0. |
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9 | */ |
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10 | |||
11 | #include <limits.h> |
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12 | #include <stdio.h> |
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13 | #include <stdlib.h> |
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14 | #include <string.h> |
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15 | #include <unistd.h> |
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16 | #include <glob.h> |
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17 | #include <libgen.h> |
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18 | |||
19 | #include "lkc.h" |
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20 | |||
21 | #define START_STRSIZE 16 |
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22 | |||
23 | static struct { |
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24 | struct file *file; |
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25 | int lineno; |
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26 | } current_pos; |
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27 | |||
28 | static char *text; |
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29 | static int text_size, text_asize; |
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30 | |||
31 | struct buffer { |
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32 | struct buffer *parent; |
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33 | YY_BUFFER_STATE state; |
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34 | }; |
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35 | |||
36 | struct buffer *current_buf; |
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37 | |||
38 | static int last_ts, first_ts; |
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39 | |||
40 | static void zconf_endhelp(void); |
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41 | static void zconf_endfile(void); |
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42 | |||
43 | static void new_string(void) |
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44 | { |
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45 | text = xmalloc(START_STRSIZE); |
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46 | text_asize = START_STRSIZE; |
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47 | text_size = 0; |
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48 | *text = 0; |
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49 | } |
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50 | |||
51 | static void append_string(const char *str, int size) |
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52 | { |
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53 | int new_size = text_size + size + 1; |
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54 | if (new_size > text_asize) { |
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55 | new_size += START_STRSIZE - 1; |
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56 | new_size &= -START_STRSIZE; |
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57 | text = realloc(text, new_size); |
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58 | text_asize = new_size; |
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59 | } |
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60 | memcpy(text + text_size, str, size); |
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61 | text_size += size; |
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62 | text[text_size] = 0; |
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63 | } |
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64 | |||
65 | static void alloc_string(const char *str, int size) |
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66 | { |
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67 | text = xmalloc(size + 1); |
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68 | memcpy(text, str, size); |
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69 | text[size] = 0; |
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70 | } |
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71 | |||
72 | static void warn_ignored_character(char chr) |
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73 | { |
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74 | fprintf(stderr, |
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75 | "%s:%d:warning: ignoring unsupported character '%c'\n", |
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76 | zconf_curname(), zconf_lineno(), chr); |
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77 | } |
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78 | %} |
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79 | |||
80 | n [A-Za-z0-9_-] |
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81 | |||
82 | %% |
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83 | int str = 0; |
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84 | int ts, i; |
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85 | |||
86 | [ \t]*#.*\n | |
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87 | [ \t]*\n { |
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88 | current_file->lineno++; |
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89 | return T_EOL; |
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90 | } |
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91 | [ \t]*#.* |
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92 | |||
93 | |||
94 | [ \t]+ { |
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95 | BEGIN(COMMAND); |
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96 | } |
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97 | |||
98 | . { |
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99 | unput(yytext[0]); |
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100 | BEGIN(COMMAND); |
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101 | } |
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102 | |||
103 | |||
104 | <COMMAND>{ |
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105 | {n}+ { |
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106 | const struct kconf_id *id = kconf_id_lookup(yytext, yyleng); |
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107 | BEGIN(PARAM); |
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108 | current_pos.file = current_file; |
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109 | current_pos.lineno = current_file->lineno; |
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110 | if (id && id->flags & TF_COMMAND) { |
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111 | zconflval.id = id; |
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112 | return id->token; |
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113 | } |
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114 | alloc_string(yytext, yyleng); |
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115 | zconflval.string = text; |
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116 | return T_WORD; |
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117 | } |
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118 | . warn_ignored_character(*yytext); |
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119 | \n { |
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120 | BEGIN(INITIAL); |
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121 | current_file->lineno++; |
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122 | return T_EOL; |
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123 | } |
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124 | } |
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125 | |||
126 | <PARAM>{ |
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127 | "&&" return T_AND; |
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128 | "||" return T_OR; |
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129 | "(" return T_OPEN_PAREN; |
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130 | ")" return T_CLOSE_PAREN; |
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131 | "!" return T_NOT; |
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132 | "=" return T_EQUAL; |
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133 | "!=" return T_UNEQUAL; |
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134 | "<=" return T_LESS_EQUAL; |
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135 | ">=" return T_GREATER_EQUAL; |
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136 | "<" return T_LESS; |
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137 | ">" return T_GREATER; |
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138 | \"|\' { |
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139 | str = yytext[0]; |
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140 | new_string(); |
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141 | BEGIN(STRING); |
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142 | } |
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143 | \n BEGIN(INITIAL); current_file->lineno++; return T_EOL; |
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144 | ({n}|[/.])+ { |
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145 | const struct kconf_id *id = kconf_id_lookup(yytext, yyleng); |
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146 | if (id && id->flags & TF_PARAM) { |
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147 | zconflval.id = id; |
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148 | return id->token; |
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149 | } |
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150 | alloc_string(yytext, yyleng); |
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151 | zconflval.string = text; |
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152 | return T_WORD; |
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153 | } |
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154 | #.* /* comment */ |
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155 | \\\n current_file->lineno++; |
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156 | [[:blank:]]+ |
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157 | . warn_ignored_character(*yytext); |
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158 | <<EOF>> { |
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159 | BEGIN(INITIAL); |
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160 | } |
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161 | } |
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162 | |||
163 | <STRING>{ |
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164 | [^'"\\\n]+/\n { |
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165 | append_string(yytext, yyleng); |
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166 | zconflval.string = text; |
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167 | return T_WORD_QUOTE; |
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168 | } |
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169 | [^'"\\\n]+ { |
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170 | append_string(yytext, yyleng); |
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171 | } |
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172 | \\.?/\n { |
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173 | append_string(yytext + 1, yyleng - 1); |
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174 | zconflval.string = text; |
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175 | return T_WORD_QUOTE; |
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176 | } |
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177 | \\.? { |
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178 | append_string(yytext + 1, yyleng - 1); |
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179 | } |
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180 | \'|\" { |
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181 | if (str == yytext[0]) { |
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182 | BEGIN(PARAM); |
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183 | zconflval.string = text; |
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184 | return T_WORD_QUOTE; |
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185 | } else |
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186 | append_string(yytext, 1); |
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187 | } |
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188 | \n { |
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189 | printf("%s:%d:warning: multi-line strings not supported\n", zconf_curname(), zconf_lineno()); |
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190 | current_file->lineno++; |
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191 | BEGIN(INITIAL); |
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192 | return T_EOL; |
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193 | } |
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194 | <<EOF>> { |
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195 | BEGIN(INITIAL); |
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196 | } |
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197 | } |
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198 | |||
199 | <HELP>{ |
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200 | [ \t]+ { |
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201 | ts = 0; |
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202 | for (i = 0; i < yyleng; i++) { |
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203 | if (yytext[i] == '\t') |
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204 | ts = (ts & ~7) + 8; |
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205 | else |
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206 | ts++; |
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207 | } |
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208 | last_ts = ts; |
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209 | if (first_ts) { |
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210 | if (ts < first_ts) { |
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211 | zconf_endhelp(); |
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212 | return T_HELPTEXT; |
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213 | } |
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214 | ts -= first_ts; |
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215 | while (ts > 8) { |
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216 | append_string(" ", 8); |
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217 | ts -= 8; |
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218 | } |
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219 | append_string(" ", ts); |
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220 | } |
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221 | } |
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222 | [ \t]*\n/[^ \t\n] { |
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223 | current_file->lineno++; |
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224 | zconf_endhelp(); |
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225 | return T_HELPTEXT; |
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226 | } |
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227 | [ \t]*\n { |
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228 | current_file->lineno++; |
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229 | append_string("\n", 1); |
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230 | } |
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231 | [^ \t\n].* { |
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232 | while (yyleng) { |
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233 | if ((yytext[yyleng-1] != ' ') && (yytext[yyleng-1] != '\t')) |
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234 | break; |
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235 | yyleng--; |
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236 | } |
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237 | append_string(yytext, yyleng); |
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238 | if (!first_ts) |
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239 | first_ts = last_ts; |
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240 | } |
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241 | <<EOF>> { |
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242 | zconf_endhelp(); |
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243 | return T_HELPTEXT; |
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244 | } |
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245 | } |
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246 | |||
247 | <<EOF>> { |
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248 | if (current_file) { |
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249 | zconf_endfile(); |
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250 | return T_EOL; |
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251 | } |
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252 | fclose(yyin); |
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253 | yyterminate(); |
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254 | } |
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255 | |||
256 | %% |
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257 | void zconf_starthelp(void) |
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258 | { |
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259 | new_string(); |
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260 | last_ts = first_ts = 0; |
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261 | BEGIN(HELP); |
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262 | } |
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263 | |||
264 | static void zconf_endhelp(void) |
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265 | { |
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266 | zconflval.string = text; |
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267 | BEGIN(INITIAL); |
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268 | } |
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269 | |||
270 | |||
271 | /* |
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272 | * Try to open specified file with following names: |
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273 | * ./name |
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274 | * $(srctree)/name |
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275 | * The latter is used when srctree is separate from objtree |
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276 | * when compiling the kernel. |
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277 | * Return NULL if file is not found. |
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278 | */ |
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279 | FILE *zconf_fopen(const char *name) |
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280 | { |
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281 | char *env, fullname[PATH_MAX+1]; |
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282 | FILE *f; |
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283 | |||
284 | f = fopen(name, "r"); |
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285 | if (!f && name != NULL && name[0] != '/') { |
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286 | env = getenv(SRCTREE); |
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287 | if (env) { |
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288 | sprintf(fullname, "%s/%s", env, name); |
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289 | f = fopen(fullname, "r"); |
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290 | } |
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291 | } |
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292 | return f; |
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293 | } |
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294 | |||
295 | void zconf_initscan(const char *name) |
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296 | { |
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297 | yyin = zconf_fopen(name); |
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298 | if (!yyin) { |
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299 | printf("can't find file %s\n", name); |
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300 | exit(1); |
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301 | } |
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302 | |||
303 | current_buf = xmalloc(sizeof(*current_buf)); |
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304 | memset(current_buf, 0, sizeof(*current_buf)); |
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305 | |||
306 | current_file = file_lookup(name); |
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307 | current_file->lineno = 1; |
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308 | } |
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309 | |||
310 | static void __zconf_nextfile(const char *name) |
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311 | { |
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312 | struct file *iter; |
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313 | struct file *file = file_lookup(name); |
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314 | struct buffer *buf = xmalloc(sizeof(*buf)); |
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315 | memset(buf, 0, sizeof(*buf)); |
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316 | |||
317 | current_buf->state = YY_CURRENT_BUFFER; |
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318 | yyin = zconf_fopen(file->name); |
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319 | if (!yyin) { |
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320 | printf("%s:%d: can't open file \"%s\"\n", |
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321 | zconf_curname(), zconf_lineno(), file->name); |
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322 | exit(1); |
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323 | } |
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324 | yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE)); |
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325 | buf->parent = current_buf; |
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326 | current_buf = buf; |
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327 | |||
328 | for (iter = current_file->parent; iter; iter = iter->parent ) { |
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329 | if (!strcmp(current_file->name,iter->name) ) { |
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330 | printf("%s:%d: recursive inclusion detected. " |
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331 | "Inclusion path:\n current file : '%s'\n", |
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332 | zconf_curname(), zconf_lineno(), |
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333 | zconf_curname()); |
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334 | iter = current_file->parent; |
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335 | while (iter && \ |
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336 | strcmp(iter->name,current_file->name)) { |
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337 | printf(" included from: '%s:%d'\n", |
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338 | iter->name, iter->lineno-1); |
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339 | iter = iter->parent; |
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340 | } |
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341 | if (iter) |
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342 | printf(" included from: '%s:%d'\n", |
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343 | iter->name, iter->lineno+1); |
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344 | exit(1); |
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345 | } |
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346 | } |
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347 | file->lineno = 1; |
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348 | file->parent = current_file; |
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349 | current_file = file; |
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350 | } |
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351 | |||
352 | void zconf_nextfile(const char *name) |
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353 | { |
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354 | glob_t gl; |
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355 | int err; |
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356 | int i; |
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357 | char path[PATH_MAX], *p; |
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358 | |||
359 | err = glob(name, GLOB_ERR | GLOB_MARK, NULL, &gl); |
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360 | |||
361 | /* ignore wildcard patterns that return no result */ |
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362 | if (err == GLOB_NOMATCH && strchr(name, '*')) { |
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363 | err = 0; |
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364 | gl.gl_pathc = 0; |
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365 | } |
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366 | |||
367 | if (err == GLOB_NOMATCH) { |
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368 | p = strdup(current_file->name); |
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369 | if (p) { |
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370 | snprintf(path, sizeof(path), "%s/%s", dirname(p), name); |
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371 | err = glob(path, GLOB_ERR | GLOB_MARK, NULL, &gl); |
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372 | free(p); |
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373 | } |
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374 | } |
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375 | |||
376 | if (err) { |
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377 | const char *reason = "unknown error"; |
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378 | |||
379 | switch (err) { |
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380 | case GLOB_NOSPACE: |
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381 | reason = "out of memory"; |
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382 | break; |
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383 | case GLOB_ABORTED: |
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384 | reason = "read error"; |
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385 | break; |
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386 | case GLOB_NOMATCH: |
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387 | reason = "No files found"; |
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388 | break; |
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389 | default: |
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390 | break; |
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391 | } |
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392 | |||
393 | printf("%s:%d: glob failed: %s \"%s\"\n", zconf_curname(), zconf_lineno(), |
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394 | reason, name); |
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395 | |||
396 | exit(1); |
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397 | } |
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398 | |||
399 | for (i = 0; i < gl.gl_pathc; i++) |
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400 | __zconf_nextfile(gl.gl_pathv[i]); |
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401 | } |
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402 | |||
403 | static void zconf_endfile(void) |
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404 | { |
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405 | struct buffer *parent; |
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406 | |||
407 | current_file = current_file->parent; |
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408 | |||
409 | parent = current_buf->parent; |
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410 | if (parent) { |
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411 | fclose(yyin); |
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412 | yy_delete_buffer(YY_CURRENT_BUFFER); |
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413 | yy_switch_to_buffer(parent->state); |
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414 | } |
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415 | free(current_buf); |
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416 | current_buf = parent; |
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417 | } |
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418 | |||
419 | int zconf_lineno(void) |
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420 | { |
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421 | return current_pos.lineno; |
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422 | } |
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423 | |||
424 | const char *zconf_curname(void) |
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425 | { |
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426 | return current_pos.file ? current_pos.file->name : "<none>"; |
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427 | } |