1 /*
2 * tabstops.c
3 * Copyright (C) 1999-2004 A.J. van Os; Released under GNU GPL
4 *
5 * Description:
6 * Read the tab stop information from a MS Word file
7 */
8
9 #include <stdio.h>
10 #include "antiword.h"
11
12 #define HALF_INCH 36000L /* In millipoints */
13
14 static long lDefaultTabWidth = HALF_INCH;
15
16
17 /*
18 * vSet0DefaultTabWidth -
19 */
20 static void
vSet0DefaultTabWidth(const UCHAR * aucHeader)21 vSet0DefaultTabWidth(const UCHAR *aucHeader)
22 {
23 USHORT usTmp;
24
25 fail(aucHeader == NULL);
26
27 usTmp = usGetWord(0x70, aucHeader); /* dxaTab */
28 DBG_DEC(usTmp);
29 lDefaultTabWidth = usTmp == 0 ? HALF_INCH : lTwips2MilliPoints(usTmp);
30 DBG_DEC(lDefaultTabWidth);
31 } /* end of vSet0DefaultTabWidth */
32
33 /*
34 * vSet2DefaultTabWidth -
35 */
36 static void
vSet2DefaultTabWidth(FILE * pFile,const UCHAR * aucHeader)37 vSet2DefaultTabWidth(FILE *pFile, const UCHAR *aucHeader)
38 {
39 UCHAR *aucBuffer;
40 ULONG ulBeginDocpInfo;
41 size_t tDocpInfoLen;
42 USHORT usTmp;
43
44 fail(pFile == NULL || aucHeader == NULL);
45
46 ulBeginDocpInfo = ulGetLong(0x112, aucHeader); /* fcDop */
47 DBG_HEX(ulBeginDocpInfo);
48 tDocpInfoLen = (size_t)usGetWord(0x116, aucHeader); /* cbDop */
49 DBG_DEC(tDocpInfoLen);
50 if (tDocpInfoLen < 12) {
51 DBG_MSG("No TAB information");
52 return;
53 }
54
55 aucBuffer = xmalloc(tDocpInfoLen);
56 if (!bReadBytes(aucBuffer, tDocpInfoLen, ulBeginDocpInfo, pFile)) {
57 aucBuffer = xfree(aucBuffer);
58 return;
59 }
60 usTmp = usGetWord(0x0a, aucBuffer); /* dxaTab */
61 lDefaultTabWidth = usTmp == 0 ? HALF_INCH : lTwips2MilliPoints(usTmp);
62 DBG_DEC(lDefaultTabWidth);
63 aucBuffer = xfree(aucBuffer);
64 } /* end of vSet2DefaultTabWidth */
65
66 /*
67 * vSet6DefaultTabWidth -
68 */
69 static void
vSet6DefaultTabWidth(FILE * pFile,ULONG ulStartBlock,const ULONG * aulBBD,size_t tBBDLen,const UCHAR * aucHeader)70 vSet6DefaultTabWidth(FILE *pFile, ULONG ulStartBlock,
71 const ULONG *aulBBD, size_t tBBDLen, const UCHAR *aucHeader)
72 {
73 UCHAR *aucBuffer;
74 ULONG ulBeginDocpInfo;
75 size_t tDocpInfoLen;
76 USHORT usTmp;
77
78 ulBeginDocpInfo = ulGetLong(0x150, aucHeader); /* fcDop */
79 DBG_HEX(ulBeginDocpInfo);
80 tDocpInfoLen = (size_t)ulGetLong(0x154, aucHeader); /* lcbDop */
81 DBG_DEC(tDocpInfoLen);
82 if (tDocpInfoLen < 12) {
83 DBG_MSG("No TAB information");
84 return;
85 }
86
87 aucBuffer = xmalloc(tDocpInfoLen);
88 if (!bReadBuffer(pFile, ulStartBlock,
89 aulBBD, tBBDLen, BIG_BLOCK_SIZE,
90 aucBuffer, ulBeginDocpInfo, tDocpInfoLen)) {
91 aucBuffer = xfree(aucBuffer);
92 return;
93 }
94 usTmp = usGetWord(0x0a, aucBuffer); /* dxaTab */
95 lDefaultTabWidth = usTmp == 0 ? HALF_INCH : lTwips2MilliPoints(usTmp);
96 DBG_DEC(lDefaultTabWidth);
97 aucBuffer = xfree(aucBuffer);
98 } /* end of vSet6DefaultTabWidth */
99
100 /*
101 * vSet8DefaultTabWidth -
102 */
103 static void
vSet8DefaultTabWidth(FILE * pFile,const pps_info_type * pPPS,const ULONG * aulBBD,size_t tBBDLen,const ULONG * aulSBD,size_t tSBDLen,const UCHAR * aucHeader)104 vSet8DefaultTabWidth(FILE *pFile, const pps_info_type *pPPS,
105 const ULONG *aulBBD, size_t tBBDLen,
106 const ULONG *aulSBD, size_t tSBDLen,
107 const UCHAR *aucHeader)
108 {
109 const ULONG *aulBlockDepot;
110 UCHAR *aucBuffer;
111 ULONG ulBeginDocpInfo;
112 size_t tDocpInfoLen, tBlockDepotLen, tBlockSize;
113 USHORT usTmp;
114
115 ulBeginDocpInfo = ulGetLong(0x192, aucHeader); /* fcDop */
116 DBG_HEX(ulBeginDocpInfo);
117 tDocpInfoLen = (size_t)ulGetLong(0x196, aucHeader); /* lcbDop */
118 DBG_DEC(tDocpInfoLen);
119 if (tDocpInfoLen < 12) {
120 DBG_MSG("No TAB information");
121 return;
122 }
123
124 DBG_DEC(pPPS->tTable.ulSB);
125 DBG_HEX(pPPS->tTable.ulSize);
126 if (pPPS->tTable.ulSize == 0) {
127 DBG_MSG("No TAB information");
128 return;
129 }
130
131 if (pPPS->tTable.ulSize < MIN_SIZE_FOR_BBD_USE) {
132 /* Use the Small Block Depot */
133 aulBlockDepot = aulSBD;
134 tBlockDepotLen = tSBDLen;
135 tBlockSize = SMALL_BLOCK_SIZE;
136 } else {
137 /* Use the Big Block Depot */
138 aulBlockDepot = aulBBD;
139 tBlockDepotLen = tBBDLen;
140 tBlockSize = BIG_BLOCK_SIZE;
141 }
142 aucBuffer = xmalloc(tDocpInfoLen);
143 if (!bReadBuffer(pFile, pPPS->tTable.ulSB,
144 aulBlockDepot, tBlockDepotLen, tBlockSize,
145 aucBuffer, ulBeginDocpInfo, tDocpInfoLen)) {
146 aucBuffer = xfree(aucBuffer);
147 return;
148 }
149 usTmp = usGetWord(0x0a, aucBuffer); /* dxaTab */
150 lDefaultTabWidth = usTmp == 0 ? HALF_INCH : lTwips2MilliPoints(usTmp);
151 DBG_DEC(lDefaultTabWidth);
152 aucBuffer = xfree(aucBuffer);
153 } /* end of vSet8DefaultTabWidth */
154
155 /*
156 * vSetDefaultTabWidth -
157 */
158 void
vSetDefaultTabWidth(FILE * pFile,const pps_info_type * pPPS,const ULONG * aulBBD,size_t tBBDLen,const ULONG * aulSBD,size_t tSBDLen,const UCHAR * aucHeader,int iWordVersion)159 vSetDefaultTabWidth(FILE *pFile, const pps_info_type *pPPS,
160 const ULONG *aulBBD, size_t tBBDLen,
161 const ULONG *aulSBD, size_t tSBDLen,
162 const UCHAR *aucHeader, int iWordVersion)
163 {
164 fail(pFile == NULL && iWordVersion >= 1);
165 fail(pPPS == NULL && iWordVersion >= 6);
166 fail(aulBBD == NULL && tBBDLen != 0);
167 fail(aulSBD == NULL && tSBDLen != 0);
168 fail(aucHeader == NULL);
169
170 /* Reset to the default default value */
171 lDefaultTabWidth = HALF_INCH;
172
173 switch (iWordVersion) {
174 case 0:
175 vSet0DefaultTabWidth(aucHeader);
176 break;
177 case 1:
178 case 2:
179 vSet2DefaultTabWidth(pFile, aucHeader);
180 break;
181 case 4:
182 case 5:
183 break;
184 case 6:
185 case 7:
186 vSet6DefaultTabWidth(pFile, pPPS->tWordDocument.ulSB,
187 aulBBD, tBBDLen, aucHeader);
188 break;
189 case 8:
190 vSet8DefaultTabWidth(pFile, pPPS,
191 aulBBD, tBBDLen, aulSBD, tSBDLen, aucHeader);
192 break;
193 default:
194 werr(0, "Sorry, no TAB information");
195 break;
196 }
197 } /* end of vSetDefaultTabWidth */
198
199 #if 0
200 /*
201 * lGetDefaultTabWidth - Get the default tabwidth in millipoints
202 */
203 long
204 lGetDefaultTabWidth(void)
205 {
206 if (lDefaultTabWidth <= 0) {
207 DBG_DEC(lDefaultTabWidth);
208 return lTwips2MilliPoints(1);
209 }
210 return lDefaultTabWidth;
211 } /* end of lGetDefaultTabWidth */
212 #endif
213