112 lines
2 KiB
C
112 lines
2 KiB
C
/* This file contains functions to handle %d, %$, %dist constructs in the
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* as_table.
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*/
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pr_text_with_conversions( str)
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char *str;
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{
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char *ptr, *next_conversion(), *pr_conversion();
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while ( ptr = next_conversion( str)) {
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/* ptr points to '%'-sign */
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*ptr = '\0';
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out( "fprint( outfile, \"%s\");", str);
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*ptr = '%';
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str = pr_conversion( ptr);
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}
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out( "fprint( outfile, \"%s\");", str);
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}
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char *next_conversion( str)
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char *str;
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/* Look for a %-sign, but not in a comment or string! */
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{
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char *match();
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while ( *str && *str != '%') {
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switch ( *str++) {
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case '\'' : str = match( '\'', str) + 1;
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break;
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case '"' : str = match( '"', str) + 1;
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break;
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}
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}
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return( *str == '%' ? str : (char *)0);
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}
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char *match( c, str)
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char c, *str;
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/* Look for charcter 'c', but watch out for things like \n */
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{
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while ( *str && ( *str != c || *(str-1) == '\\'))
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str++;
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return( *str ? str : str-1);
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}
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char *match_bracket( str)
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char *str;
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/* find ')', but look at nesting '('-')' pairs, return position of ')'.
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* Skip strings and comments.
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*/
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{
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int depth;
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char *match();
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depth = 1;
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while ( *str && depth != 0) {
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switch ( *str++) {
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case '\'' : str = match( '\'', str+1) + 1;
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break;
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case '"' : str = match( '"', str+1) + 1;
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break;
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case '(' : depth++;
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break;
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case ')' : depth--;
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break;
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}
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}
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return( str-1);
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}
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char *find( c, str)
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char c, *str;
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{
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while ( *str && *str != c)
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str++;
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return( str);
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}
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char *pr_conversion( str)
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char *str;
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/* str points to '%'-sign, returns pointer to first character AFTER the
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* conversion. %$ will result in a call of eval(), %d will call dist().
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*/
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{
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char *start, *ptr, *match_bracket(), *find();
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start = find( '(', str+1);
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*start++ = '\0';
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ptr = match_bracket( start);
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*ptr = '\0';
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if ( *(str+1) == '$')
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out( "eval( %s);", start);
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else if ( strncmp( str+1, "dist", 4) == 0)
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out( "dist( %s);", start);
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else
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out( "fprint( outfile, \"%%%s\", %s);", str+1, start);
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return( ptr+1);
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}
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