2 Copyright (c) 1999-2014 OPEN CASCADE SAS
4 This file is part of Open CASCADE Technology software library.
6 This library is free software; you can redistribute it and/or modify it under
7 the terms of the GNU Lesser General Public License version 2.1 as published
8 by the Free Software Foundation, with special exception defined in the file
9 OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
10 distribution for complete text of the license and disclaimer of any warranty.
12 Alternatively, this file may be used under the terms of Open CASCADE
13 commercial license or contractual agreement.
18 /* Routine de base de lecture d'un fichier IGES
20 Cette routine lit une ligne, sauf si le statut "relire sur place" est mis
21 (utilise pour changement de section) : il est reannule ensuite
23 Cette routine retourne :
24 - statut (retour fonction) : no de section : S,G,D,P,T (car 73) ou
25 0 (EOF) ou -1 (tacher de sauter) ou -2 (car. 73 faux)
26 - un numero de ligne dans la section (car. 74 a 80)
27 - la ligne tronquee a 72 caracteres (0 binaire dans le 73ieme)
28 Il faut lui fournir (buffer) une ligne reservee a 81 caracteres
30 Cas d erreur : ligne fausse des le debut -> abandon. Sinon tacher d enjamber
33 static int iges_fautrelire = 0;
34 int iges_lire (FILE* lefic, int *numsec, char ligne[100], int modefnes)
35 /*int iges_lire (lefic,numsec,ligne,modefnes)*/
36 /*FILE* lefic; int *numsec; char ligne[100]; int modefnes;*/
38 int i,result; char typesec;
40 if (iges_fautrelire == 0)
43 ligne[72] = ligne[79] = ' ';
48 if (fgets(ligne,99,lefic) == NULL) /*for kept compatibility with fnes*/
53 /* PTV: 21.03.2002 it is necessary for files that have only `\r` but no `\n`
54 examle file is 919-001-T02-04-CP-VL.iges */
55 while ( fgets ( ligne, 2, lefic ) && ( ligne[0] == '\r' || ligne[0] == '\n' ) )
59 if (fgets(&ligne[1],80,lefic) == NULL)
63 if (*numsec == 0 && ligne[72] != 'S' && ligne[79] == ' ')
64 {/* ON A DU FNES : Sauter la 1re ligne */
69 if (fgets(ligne,99,lefic) == NULL) /*for kept compatibility with fnes*/
74 while ( fgets ( ligne, 2, lefic ) && ( ligne[0] == '\r' || ligne[0] == '\n' ) )
77 if (fgets(&ligne[1],80,lefic) == NULL)
82 if ((ligne[0] & 128) && modefnes)
84 for (i = 0; i < 80; i ++)
85 ligne[i] = (char)(ligne[i] ^ (150 + (i & 3)));
92 {//0x1A is END_OF_FILE for OS DOS and WINDOWS. For other OS we set this rule forcefully.
93 char *fc = strchr(ligne, 0x1A);
102 if (ligne[0] == '\0' || ligne[0] == '\n' || ligne[0] == '\r')
103 return iges_lire(lefic,numsec,ligne,modefnes); /* 0 */
105 if (sscanf(&ligne[73],"%d",&result) != 0) {
109 case 'S' : ligne[72] = '\0'; return (1);
110 case 'G' : ligne[72] = '\0'; return (2);
111 case 'D' : ligne[72] = '\0'; return (3);
112 case 'P' : ligne[72] = '\0'; return (4);
113 case 'T' : ligne[72] = '\0'; return (5);
116 /* the column 72 is empty, try to check the neighbour*/
118 && (ligne[79]=='\n' || ligne[79]=='\r') && (ligne[0]<='9' && ligne[0]>='0')) {
119 /*check in case of loss.*/
121 for(index = 1; ligne[index]<='9' && ligne[index]>='0'; index++);
122 if (ligne[index]=='D' || ligne[index]=='d') {
123 for(index = 79; index > 0; index--)
124 ligne[index] = ligne[index-1];
129 case 'S' : ligne[72] = '\0'; return (1);
130 case 'G' : ligne[72] = '\0'; return (2);
131 case 'D' : ligne[72] = '\0'; return (3);
132 case 'P' : ligne[72] = '\0'; return (4);
133 case 'T' : ligne[72] = '\0'; return (5);
139 // the line is not conform to standard, try to read it (if there are some missing spaces)
140 // find the number end
141 i = (int)strlen(ligne);
142 while ((ligne[i] == '\0' || ligne[i] == '\n' || ligne[i] == '\r' || ligne[i] == ' ') && i > 0)
144 if (i != (int)strlen(ligne))
146 // find the number start
147 while (ligne[i] >= '0' && ligne[i] <= '9' && i > 0)
149 if (sscanf(&ligne[i + 1],"%d",&result) == 0)
153 while (ligne[i] == ' ' && i > 0)
157 case 'S' : ligne[i] = '\0'; return (1);
158 case 'G' : ligne[i] = '\0'; return (2);
159 case 'D' : ligne[i] = '\0'; return (3);
160 case 'P' : ligne[i] = '\0'; return (4);
161 case 'T' : ligne[i] = '\0'; return (5);
162 default :; /* printf("Ligne incorrecte, ignoree n0.%d :\n%s\n",*numl,ligne); */
167 /* Pour commander la relecture sur place */
170 { iges_fautrelire = 1; }