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Rev | Author | Line No. | Line |
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4349 | Serge | 1 | /* |
2 | * This little program is used to parse the FreeType headers and |
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3 | * find the declaration of all public APIs. This is easy, because |
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4 | * they all look like the following: |
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5 | * |
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6 | * FT_EXPORT( return_type ) |
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7 | * function_name( function arguments ); |
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8 | * |
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9 | * You must pass the list of header files as arguments. Wildcards are |
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10 | * accepted if you are using GCC for compilation (and probably by |
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11 | * other compilers too). |
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12 | * |
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13 | * Author: David Turner, 2005, 2006, 2008-2013 |
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14 | * |
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15 | * This code is explicitly placed into the public domain. |
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16 | * |
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17 | */ |
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18 | |||
19 | #include |
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20 | #include |
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21 | #include |
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22 | #include |
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23 | |||
24 | #define PROGRAM_NAME "apinames" |
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25 | #define PROGRAM_VERSION "0.2" |
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26 | |||
27 | #define LINEBUFF_SIZE 1024 |
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28 | |||
29 | typedef enum OutputFormat_ |
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30 | { |
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31 | OUTPUT_LIST = 0, /* output the list of names, one per line */ |
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32 | OUTPUT_WINDOWS_DEF, /* output a Windows .DEF file for Visual C++ or Mingw */ |
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33 | OUTPUT_BORLAND_DEF, /* output a Windows .DEF file for Borland C++ */ |
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34 | OUTPUT_WATCOM_LBC, /* output a Watcom Linker Command File */ |
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35 | OUTPUT_NETWARE_IMP /* output a NetWare ImportFile */ |
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36 | |||
37 | } OutputFormat; |
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38 | |||
39 | |||
40 | static void |
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41 | panic( const char* message ) |
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42 | { |
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43 | fprintf( stderr, "PANIC: %s\n", message ); |
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44 | exit(2); |
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45 | } |
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46 | |||
47 | |||
48 | typedef struct NameRec_ |
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49 | { |
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50 | char* name; |
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51 | unsigned int hash; |
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52 | |||
53 | } NameRec, *Name; |
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54 | |||
55 | static Name the_names; |
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56 | static int num_names; |
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57 | static int max_names; |
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58 | |||
59 | static void |
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60 | names_add( const char* name, |
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61 | const char* end ) |
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62 | { |
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63 | unsigned int h; |
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64 | int nn, len; |
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65 | Name nm; |
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66 | |||
67 | if ( end <= name ) |
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68 | return; |
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69 | |||
70 | /* compute hash value */ |
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71 | len = (int)(end - name); |
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72 | h = 0; |
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73 | for ( nn = 0; nn < len; nn++ ) |
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74 | h = h*33 + name[nn]; |
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75 | |||
76 | /* check for an pre-existing name */ |
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77 | for ( nn = 0; nn < num_names; nn++ ) |
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78 | { |
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79 | nm = the_names + nn; |
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80 | |||
81 | if ( (int)nm->hash == h && |
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82 | memcmp( name, nm->name, len ) == 0 && |
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83 | nm->name[len] == 0 ) |
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84 | return; |
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85 | } |
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86 | |||
87 | /* add new name */ |
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88 | if ( num_names >= max_names ) |
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89 | { |
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90 | max_names += (max_names >> 1) + 4; |
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91 | the_names = (NameRec*)realloc( the_names, |
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92 | sizeof ( the_names[0] ) * max_names ); |
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93 | if ( the_names == NULL ) |
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94 | panic( "not enough memory" ); |
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95 | } |
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96 | nm = &the_names[num_names++]; |
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97 | |||
98 | nm->hash = h; |
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99 | nm->name = (char*)malloc( len+1 ); |
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100 | if ( nm->name == NULL ) |
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101 | panic( "not enough memory" ); |
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102 | |||
103 | memcpy( nm->name, name, len ); |
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104 | nm->name[len] = 0; |
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105 | } |
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106 | |||
107 | |||
108 | static int |
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109 | name_compare( const void* name1, |
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110 | const void* name2 ) |
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111 | { |
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112 | Name n1 = (Name)name1; |
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113 | Name n2 = (Name)name2; |
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114 | |||
115 | return strcmp( n1->name, n2->name ); |
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116 | } |
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117 | |||
118 | static void |
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119 | names_sort( void ) |
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120 | { |
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121 | qsort( the_names, (size_t)num_names, |
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122 | sizeof ( the_names[0] ), name_compare ); |
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123 | } |
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124 | |||
125 | |||
126 | static void |
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127 | names_dump( FILE* out, |
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128 | OutputFormat format, |
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129 | const char* dll_name ) |
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130 | { |
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131 | int nn; |
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132 | |||
133 | |||
134 | switch ( format ) |
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135 | { |
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136 | case OUTPUT_WINDOWS_DEF: |
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137 | if ( dll_name ) |
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138 | fprintf( out, "LIBRARY %s\n", dll_name ); |
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139 | |||
140 | fprintf( out, "DESCRIPTION FreeType 2 DLL\n" ); |
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141 | fprintf( out, "EXPORTS\n" ); |
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142 | for ( nn = 0; nn < num_names; nn++ ) |
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143 | fprintf( out, " %s\n", the_names[nn].name ); |
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144 | break; |
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145 | |||
146 | case OUTPUT_BORLAND_DEF: |
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147 | if ( dll_name ) |
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148 | fprintf( out, "LIBRARY %s\n", dll_name ); |
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149 | |||
150 | fprintf( out, "DESCRIPTION FreeType 2 DLL\n" ); |
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151 | fprintf( out, "EXPORTS\n" ); |
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152 | for ( nn = 0; nn < num_names; nn++ ) |
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153 | fprintf( out, " _%s\n", the_names[nn].name ); |
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154 | break; |
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155 | |||
156 | case OUTPUT_WATCOM_LBC: |
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157 | { |
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158 | const char* dot; |
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159 | |||
160 | |||
161 | if ( dll_name == NULL ) |
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162 | { |
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163 | fprintf( stderr, |
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164 | "you must provide a DLL name with the -d option!\n" ); |
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165 | exit( 4 ); |
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166 | } |
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167 | |||
168 | /* we must omit the .dll suffix from the library name */ |
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169 | dot = strchr( dll_name, '.' ); |
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170 | if ( dot != NULL ) |
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171 | { |
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172 | char temp[512]; |
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173 | int len = dot - dll_name; |
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174 | |||
175 | |||
176 | if ( len > (int)( sizeof ( temp ) - 1 ) ) |
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177 | len = sizeof ( temp ) - 1; |
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178 | |||
179 | memcpy( temp, dll_name, len ); |
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180 | temp[len] = 0; |
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181 | |||
182 | dll_name = (const char*)temp; |
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183 | } |
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184 | |||
185 | for ( nn = 0; nn < num_names; nn++ ) |
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186 | fprintf( out, "++_%s.%s.%s\n", the_names[nn].name, dll_name, |
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187 | the_names[nn].name ); |
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188 | } |
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189 | break; |
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190 | |||
191 | case OUTPUT_NETWARE_IMP: |
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192 | { |
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193 | if ( dll_name != NULL ) |
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194 | fprintf( out, " (%s)\n", dll_name ); |
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195 | for ( nn = 0; nn < num_names - 1; nn++ ) |
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196 | fprintf( out, " %s,\n", the_names[nn].name ); |
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197 | fprintf( out, " %s\n", the_names[num_names - 1].name ); |
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198 | } |
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199 | break; |
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200 | |||
201 | default: /* LIST */ |
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202 | for ( nn = 0; nn < num_names; nn++ ) |
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203 | fprintf( out, "%s\n", the_names[nn].name ); |
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204 | } |
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205 | } |
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206 | |||
207 | |||
208 | |||
209 | |||
210 | /* states of the line parser */ |
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211 | |||
212 | typedef enum State_ |
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213 | { |
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214 | STATE_START = 0, /* waiting for FT_EXPORT keyword and return type */ |
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215 | STATE_TYPE /* type was read, waiting for function name */ |
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216 | |||
217 | } State; |
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218 | |||
219 | static int |
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220 | read_header_file( FILE* file, int verbose ) |
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221 | { |
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222 | static char buff[LINEBUFF_SIZE + 1]; |
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223 | State state = STATE_START; |
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224 | |||
225 | while ( !feof( file ) ) |
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226 | { |
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227 | char* p; |
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228 | |||
229 | if ( !fgets( buff, LINEBUFF_SIZE, file ) ) |
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230 | break; |
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231 | |||
232 | p = buff; |
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233 | |||
234 | while ( *p && (*p == ' ' || *p == '\\') ) /* skip leading whitespace */ |
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235 | p++; |
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236 | |||
237 | if ( *p == '\n' || *p == '\r' ) /* skip empty lines */ |
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238 | continue; |
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239 | |||
240 | switch ( state ) |
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241 | { |
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242 | case STATE_START: |
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243 | { |
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244 | if ( memcmp( p, "FT_EXPORT(", 10 ) != 0 ) |
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245 | break; |
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246 | |||
247 | p += 10; |
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248 | for (;;) |
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249 | { |
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250 | if ( *p == 0 || *p == '\n' || *p == '\r' ) |
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251 | goto NextLine; |
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252 | |||
253 | if ( *p == ')' ) |
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254 | { |
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255 | p++; |
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256 | break; |
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257 | } |
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258 | |||
259 | p++; |
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260 | } |
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261 | |||
262 | state = STATE_TYPE; |
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263 | |||
264 | /* sometimes, the name is just after the FT_EXPORT(...), so |
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265 | * skip whitespace, and fall-through if we find an alphanumeric |
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266 | * character |
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267 | */ |
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268 | while ( *p == ' ' || *p == '\t' ) |
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269 | p++; |
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270 | |||
271 | if ( !isalpha(*p) ) |
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272 | break; |
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273 | } |
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274 | /* fall-through */ |
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275 | |||
276 | case STATE_TYPE: |
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277 | { |
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278 | char* name = p; |
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279 | |||
280 | while ( isalnum(*p) || *p == '_' ) |
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281 | p++; |
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282 | |||
283 | if ( p > name ) |
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284 | { |
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285 | if ( verbose ) |
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286 | fprintf( stderr, ">>> %.*s\n", (int)(p - name), name ); |
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287 | |||
288 | names_add( name, p ); |
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289 | } |
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290 | |||
291 | state = STATE_START; |
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292 | } |
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293 | break; |
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294 | |||
295 | default: |
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296 | ; |
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297 | } |
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298 | |||
299 | NextLine: |
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300 | ; |
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301 | } |
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302 | |||
303 | return 0; |
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304 | } |
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305 | |||
306 | |||
307 | static void |
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308 | usage( void ) |
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309 | { |
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310 | static const char* const format = |
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311 | "%s %s: extract FreeType API names from header files\n\n" |
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312 | "this program is used to extract the list of public FreeType API\n" |
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313 | "functions. It receives the list of header files as argument and\n" |
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314 | "generates a sorted list of unique identifiers\n\n" |
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315 | |||
316 | "usage: %s header1 [options] [header2 ...]\n\n" |
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317 | |||
318 | "options: - : parse the content of stdin, ignore arguments\n" |
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319 | " -v : verbose mode, output sent to standard error\n" |
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320 | " -oFILE : write output to FILE instead of standard output\n" |
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321 | " -dNAME : indicate DLL file name, 'freetype.dll' by default\n" |
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322 | " -w : output .DEF file for Visual C++ and Mingw\n" |
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323 | " -wB : output .DEF file for Borland C++\n" |
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324 | " -wW : output Watcom Linker Response File\n" |
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325 | " -wN : output NetWare Import File\n" |
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326 | "\n"; |
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327 | |||
328 | fprintf( stderr, |
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329 | format, |
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330 | PROGRAM_NAME, |
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331 | PROGRAM_VERSION, |
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332 | PROGRAM_NAME |
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333 | ); |
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334 | exit(1); |
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335 | } |
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336 | |||
337 | |||
338 | int main( int argc, const char* const* argv ) |
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339 | { |
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340 | int from_stdin = 0; |
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341 | int verbose = 0; |
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342 | OutputFormat format = OUTPUT_LIST; /* the default */ |
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343 | FILE* out = stdout; |
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344 | const char* library_name = NULL; |
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345 | |||
346 | if ( argc < 2 ) |
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347 | usage(); |
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348 | |||
349 | /* '-' used as a single argument means read source file from stdin */ |
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350 | while ( argc > 1 && argv[1][0] == '-' ) |
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351 | { |
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352 | const char* arg = argv[1]; |
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353 | |||
354 | switch ( arg[1] ) |
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355 | { |
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356 | case 'v': |
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357 | verbose = 1; |
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358 | break; |
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359 | |||
360 | case 'o': |
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361 | if ( arg[2] == 0 ) |
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362 | { |
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363 | if ( argc < 2 ) |
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364 | usage(); |
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365 | |||
366 | arg = argv[2]; |
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367 | argv++; |
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368 | argc--; |
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369 | } |
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370 | else |
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371 | arg += 2; |
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372 | |||
373 | out = fopen( arg, "wt" ); |
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374 | if ( out == NULL ) |
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375 | { |
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376 | fprintf( stderr, "could not open '%s' for writing\n", argv[2] ); |
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377 | exit(3); |
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378 | } |
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379 | break; |
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380 | |||
381 | case 'd': |
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382 | if ( arg[2] == 0 ) |
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383 | { |
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384 | if ( argc < 2 ) |
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385 | usage(); |
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386 | |||
387 | arg = argv[2]; |
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388 | argv++; |
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389 | argc--; |
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390 | } |
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391 | else |
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392 | arg += 2; |
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393 | |||
394 | library_name = arg; |
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395 | break; |
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396 | |||
397 | case 'w': |
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398 | format = OUTPUT_WINDOWS_DEF; |
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399 | switch ( arg[2] ) |
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400 | { |
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401 | case 'B': |
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402 | format = OUTPUT_BORLAND_DEF; |
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403 | break; |
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404 | |||
405 | case 'W': |
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406 | format = OUTPUT_WATCOM_LBC; |
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407 | break; |
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408 | |||
409 | case 'N': |
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410 | format = OUTPUT_NETWARE_IMP; |
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411 | break; |
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412 | |||
413 | case 0: |
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414 | break; |
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415 | |||
416 | default: |
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417 | usage(); |
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418 | } |
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419 | break; |
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420 | |||
421 | case 0: |
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422 | from_stdin = 1; |
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423 | break; |
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424 | |||
425 | default: |
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426 | usage(); |
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427 | } |
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428 | |||
429 | argc--; |
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430 | argv++; |
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431 | } |
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432 | |||
433 | if ( from_stdin ) |
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434 | { |
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435 | read_header_file( stdin, verbose ); |
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436 | } |
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437 | else |
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438 | { |
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439 | for ( --argc, argv++; argc > 0; argc--, argv++ ) |
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440 | { |
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441 | FILE* file = fopen( argv[0], "rb" ); |
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442 | |||
443 | if ( file == NULL ) |
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444 | fprintf( stderr, "unable to open '%s'\n", argv[0] ); |
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445 | else |
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446 | { |
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447 | if ( verbose ) |
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448 | fprintf( stderr, "opening '%s'\n", argv[0] ); |
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449 | |||
450 | read_header_file( file, verbose ); |
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451 | fclose( file ); |
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452 | } |
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453 | } |
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454 | } |
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455 | |||
456 | if ( num_names == 0 ) |
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457 | panic( "could not find exported functions !!\n" ); |
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458 | |||
459 | names_sort(); |
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460 | names_dump( out, format, library_name ); |
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461 | |||
462 | if ( out != stdout ) |
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463 | fclose( out ); |
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464 | |||
465 | return 0; |
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466 | }>>>>>>>>>>=> |