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1 /*

2 * Internal header for the AFM library.

4 *

5 * Author: Markku Rossi <mtr@iki.fi>

6 */

8 /*

9 * Enscript is free software: you can redistribute it and/or modify

10 * it under the terms of the GNU General Public License as published by

11 * the Free Software Foundation, either version 3 of the License, or

12 * (at your option) any later version.

13 *

14 * Enscript is distributed in the hope that it will be useful,

15 * but WITHOUT ANY WARRANTY; without even the implied warranty of

16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

17 * GNU General Public License for more details.

18 *

19 * You should have received a copy of the GNU General Public License

20 * along with Enscript. If not, see <http://www.gnu.org/licenses/>.

21 */

23 #ifndef AFMINT_H

24 #define AFMINT_H

26 /*

27 * Config stuffs.

28 */

30 #ifdef HAVE_CONFIG_H

31 #include <config.h>

32 #endif

34 #include <stdio.h>

36 #ifndef ___P

37 #if PROTOTYPES

38 #define ___P(protos) protos

39 #else /* no PROTOTYPES */

40 #define ___P(protos) ()

41 #endif /* no PROTOTYPES */

42 #endif

44 #if STDC_HEADERS

46 #include <stdlib.h>

47 #include <string.h>

49 #else /* no STDC_HEADERS */

51 #if HAVE_STDLIB_H

52 #include <stdlib.h>

53 #endif

55 #if HAVE_STRING_H

56 #include <string.h>

57 #endif

59 #ifndef HAVE_STRCHR

60 #define strchr index

61 #define strrchr rindex

62 #endif

63 char *strchr ();

64 char *strrchr ();

66 #ifndef HAVE_MEMCPY

67 #define memcpy(d, s, n) bcopy((s), (d), (n))

68 #endif

70 #ifndef HAVE_STRERROR

71 extern char *strerror ___P ((int));

72 #endif

74 #endif /* no STDC_HEADERS */

76 #if HAVE_UNISTD_H

77 #include <unistd.h>

78 #endif

80 #include <setjmp.h>

81 #include <assert.h>

82 #include <errno.h>

84 #include <sys/types.h>

85 #include <sys/stat.h>

87 #include "afm.h"

88 #include "strhash.h"

91 /*

92 * Types and definitions.

93 */

95 /* Error codes. */

96 #define AFM_ERROR 1

97 #define AFM_ERROR_MEMORY 2

98 #define AFM_ERROR_ARGUMENT 3

99 #define AFM_ERROR_UNKNOWN_FONT 4

100 #define AFM_ERROR_SYNTAX 5

101 #define AFM_ERROR_UNSUPPORTED_FORMAT 6

102 #define AFM_ERROR_FILE_IO 7

103 #define AFM_ERROR_NOT_AFM_FILE 8

104 #define NUM_ERRORS 9

105

106 /* Pack error and global errno. */

107 #define SYSERROR(code) (errno << 16 | (code))

108

109

110 /* Keys. */

111

112 typedef enum

113 {

114 kComment,

115

116 /* File structure. */

117 kStartFontMetrics,

118 kEndFontMetrics,

119 kStartCompFontMetrics,

120 kEndCompFontMetrics,

121 kStartDescendent,

122 kEndDescendent,

123 kStartMasterFontMetrics,

124 kEndMasterFontMetrics,

125

126 /* Control information. */

127 kMetricsSets,

128 kDescendents,

129 kMasters,

130 kAxes,

131

132 /* Global font information. */

133 kFontName,

134 kFullName,

135 kFamilyName,

136 kWeight,

137 kFontBBox,

138 kVersion,

139 kNotice,

140 kEncodingScheme,

141 kMappingScheme,

142 kEscChar,

143 kCharacterSet,

144 kCharacters,

145 kIsBaseFont,

146 kVVector,

147 kIsFixedV,

148 kCapHeight,

149 kXHeight,

150 kAscender,

151 kDescender,

152 kWeightVector,

153 kBlendDesignPositions,

154 kBlendDesignMap,

155 kBlendAxisTypes,

156

157 /* Writing direction information. */

158 kStartDirection,

159 kEndDirection,

160 kUnderlinePosition,

161 kUnderlineThickness,

162 kItalicAngle,

163 kCharWidth,

164 kIsFixedPitch,

165

166 /* Individual character metrics. */

167 kStartCharMetrics,

168 kEndCharMetrics,

169 kC,

170 kCH,

171 kWX,

172 kW0X,

173 kW1X,

174 kWY,

175 kW0Y,

176 kW1Y,

177 kW,

178 kW0,

179 kW1,

180 kVV,

181 kN,

182 kB,

183 kL,

184

185 /* Kerning data. */

186 kStartKernData,

187 kEndKernData,

188 kStartTrackKern,

189 kEndTrackKern,

190 kTrackKern,

191 kStartKernPairs,

192 kEndKernPairs,

193 kKP,

194 kKPH,

195 kKPX,

196 kKPY,

197

198 /* Composite character data. */

199 kStartComposites,

200 kEndComposites,

201 kCC,

202 kPCC,

203

204 /* Axis information. */

205 kStartAxis,

206 kEndAxis,

207 kAxisType,

208 kAxisLabel,

209

210 /* Master Design Information */

211 kStartMaster,

212 kEndMaster

213

214 } AFMKey;

215

216

217 struct afm_handle_st

218 {

219 unsigned int verbose; /* verbose level */

220 StringHashPtr font_map; /* fontname -> AFM filename mapping */

221

222 /* Parse support. */

223 jmp_buf jmpbuf;

224 AFMError parse_error; /* Error that caused longjmp(). */

225 };

226

227

228 /* Store library's private font data to this structure. */

229 struct afm_font_private_data_st

230 {

231 /* Character that is used for undefined codes (' '). */

232 AFMIndividualCharacterMetrics *undef;

233

234 StringHashPtr fontnames; /* fontname -> character info mapping */

235 StringHashPtr compositenames; /* composite -> AFMComposite mapping */

236 };

237

238

239 /*

240 * Encoding tables.

241 */

242

243 struct encoding_table_st

244 {

245 int code;

246 char *character;

247 };

248

249 typedef struct encoding_table_st AFMEncodingTable;

250

251 extern AFMEncodingTable afm_88591_encoding[];

252 extern AFMEncodingTable afm_88592_encoding[];

253 extern AFMEncodingTable afm_88593_encoding[];

254 extern AFMEncodingTable afm_88594_encoding[];

255 extern AFMEncodingTable afm_88595_encoding[];

256 extern AFMEncodingTable afm_88597_encoding[];

257 extern AFMEncodingTable afm_88599_encoding[];

258 extern AFMEncodingTable afm_885910_encoding[];

259 extern AFMEncodingTable afm_ibmpc_encoding[];

260 extern AFMEncodingTable afm_mac_encoding[];

261 extern AFMEncodingTable afm_vms_encoding[];

262 extern AFMEncodingTable afm_hp8_encoding[];

263 extern AFMEncodingTable afm_koi8_encoding[];

264

265

266 /*

267 * Global help functions.

268 */

269

270 /* Print message if <level> is larger than library's verbose level. */

271 void afm_message ___P ((AFMHandle handle, unsigned int level, char *message));

272

273 /* Print error message to stderr. */

274 void afm_error ___P ((AFMHandle handle, char *message));

275

276 \f

277 /*

278 * AFM file parsing

279 */

280

281 /* Parse AFM file <filename> and fill up font <font>. */

282 void afm_parse_file ___P ((AFMHandle handle, const char *filename,

283 AFMFont font));

284

285 #endif /* not AFMINT_H */