FreeCalypso > hg > ueda-linux
annotate ueda/libuschem/rdschem_lex.c @ 65:2b71943a311b
pads2gpcb: PART section parsing implemented, compiles
author | Mychaela Falconia <falcon@ivan.Harhan.ORG> |
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date | Sun, 31 Jan 2016 21:32:08 +0000 |
parents | cd92449fdb51 |
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rev | line source |
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0
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1 /* |
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2 * token lexer for the schematic parser |
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3 */ |
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4 |
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5 #include <sys/types.h> |
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6 #include <stdio.h> |
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7 #include <ctype.h> |
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8 #include <strings.h> |
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9 #include "schemstruct.h" |
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10 #include "parserint.h" |
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11 |
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12 extern char *malloc(); |
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13 |
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14 extern struct schem_parse_state schem_parse_state; |
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15 |
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16 static |
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17 my_getchar() |
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18 { |
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19 register int c; |
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20 |
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21 c = getc(schem_parse_state.file); |
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22 if (c < 0) |
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23 return(c); |
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24 if (!isascii(c)) { |
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25 rdschem_error("non-ASCII character"); |
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26 exit(1); |
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27 } |
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28 if (iscntrl(c) && c != '\n' && c != '\t') { |
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29 rdschem_error("invalid control character"); |
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30 exit(1); |
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31 } |
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32 return(c); |
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33 } |
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34 |
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35 rdschem_token() |
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36 { |
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37 register int c; |
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38 register char *cp; |
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39 register int len; |
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40 static char delims[] = "\n\"%(),;={}"; |
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41 |
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42 if (c = schem_parse_state.pushback_token) { |
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43 schem_parse_state.pushback_token = 0; |
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44 return(c); |
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45 } |
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46 loop: c = my_getchar(); |
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47 switch (c) { |
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48 case EOF: |
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49 return(0); |
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50 case ' ': |
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51 case '\t': |
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52 goto loop; |
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53 case '"': |
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54 yylex_qstr(); |
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55 return(QSTRING); |
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56 case '%': |
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57 do |
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58 c = my_getchar(); |
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59 while (c != EOF && c != '\n'); |
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60 if (c == EOF) |
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61 return(0); |
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62 /* FALL THRU */ |
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63 case '\n': |
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64 schem_parse_state.lineno++; |
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65 goto loop; |
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66 case '(': |
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67 case ')': |
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68 case ',': |
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69 case ';': |
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70 case '=': |
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71 case '{': |
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72 case '}': |
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73 return(c); |
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74 } |
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75 cp = schem_parse_state.string; |
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76 *cp++ = c; |
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77 for (len = 1; ; ) { |
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78 c = my_getchar(); |
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79 if (c == EOF || c == ' ' || c == '\t') |
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80 break; |
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81 if (index(delims, c)) { |
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82 ungetc(c, schem_parse_state.file); |
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83 break; |
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84 } |
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85 if (len >= MAXSTRING) |
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86 rdschem_error("text token is too long"); |
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87 *cp++ = c; |
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88 len++; |
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89 } |
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90 *cp = '\0'; |
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91 return(STRING); |
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92 } |
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93 |
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94 static |
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95 yylex_qstr() |
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96 { |
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97 register int c; |
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98 register char *cp; |
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99 register int len; |
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100 |
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101 cp = schem_parse_state.string; |
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102 for (len = 0; ; ) { |
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103 c = my_getchar(); |
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104 if (c == EOF || c == '\n') |
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105 unterm: rdschem_error("unterminated quoted string"); |
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106 if (c == '"') |
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107 break; |
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108 if (c == '\\') { |
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109 c = my_getchar(); |
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110 if (c == EOF || c == '\n') |
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111 goto unterm; |
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112 } |
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113 if (len >= MAXSTRING) |
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114 rdschem_error("quoted string is too long"); |
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115 *cp++ = c; |
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116 len++; |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
117 } |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
118 *cp = '\0'; |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
119 } |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
120 |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
121 struct graphblock * |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
122 rdschem_graphblock(type) |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
123 { |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
124 struct graphblock *blk; |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
125 register int c, n; |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
126 |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
127 blk = (struct graphblock *) malloc(sizeof(struct graphblock)); |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
128 if (!blk) { |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
129 perror("malloc"); |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
130 exit(1); |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
131 } |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
132 blk->type = type; |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
133 blk->lineno = schem_parse_state.lineno; |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
134 c = my_getchar(); |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
135 if (c == EOF) |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
136 badeof: rdschem_error("EOF in a graphical block"); |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
137 if (c == '\n') |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
138 schem_parse_state.lineno++; |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
139 else |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
140 ungetc(c, schem_parse_state.file); |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
141 blk->offset = ftell(schem_parse_state.file); |
cd92449fdb51
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
142 |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
143 for (n = 0; n >= 0; ) { |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
144 c = my_getchar(); |
cd92449fdb51
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
145 switch (c) { |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
146 case EOF: |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
147 goto badeof; |
cd92449fdb51
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
148 case '%': |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
149 for (;;) { |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
150 c = my_getchar(); |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
151 if (c == EOF) |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
152 goto badeof; |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
153 if (c == '\n') |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
154 break; |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
155 } |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
156 /* FALL THRU */ |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
157 case '\n': |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
158 schem_parse_state.lineno++; |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
159 continue; |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
160 case '(': |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
161 skip_over_ps_string(); |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
162 continue; |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
163 case ')': |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
164 rdschem_error("unmatched \')\' in a graphical block"); |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
165 case '{': |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
166 n++; |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
167 continue; |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
168 case '}': |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
169 n--; |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
170 continue; |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
171 } |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
172 } |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
173 blk->length = ftell(schem_parse_state.file) - blk->offset - 1; |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
174 return(blk); |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
175 } |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
176 |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
177 static |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
178 skip_over_ps_string() |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
179 { |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
180 register int c, n; |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
181 |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
182 for (n = 1; n > 0; ) { |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
183 c = my_getchar(); |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
184 switch (c) { |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
185 case EOF: |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
186 badeof: rdschem_error("EOF in a PS string in a graphical block"); |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
187 case '\n': |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
188 schem_parse_state.lineno++; |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
189 continue; |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
190 case '(': |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
191 n++; |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
192 continue; |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
193 case ')': |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
194 n--; |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
195 continue; |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
196 case '\\': |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
197 c = my_getchar(); |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
198 if (c == EOF) |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
199 goto badeof; |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
200 if (c == '\n') |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
201 schem_parse_state.lineno++; |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
202 continue; |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
203 } |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
204 } |
cd92449fdb51
initial import of ueda and ifctf-part-lib from ifctfvax CVS
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
205 } |