1 /*-------------------------------------------------------------------------
2 SDCCmain.c - Macro support code.
4 Written By - Sandeep Dutta . sandeep.dutta@usa.net (1999)
6 This program is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 In other words, you are welcome to use, share and improve this program.
21 You are forbidden to forbid anyone else to use, share and improve
22 what you give them. Help stamp out software-hoarding!
23 -------------------------------------------------------------------------*/
29 MAX_STRING_LENGTH = 2048,
30 MAX_MACRO_NAME_LENGTH = 128
34 _evalMacros(char *apinto, hTab *pvals, const char *pfrom, size_t alen)
36 bool fdidsomething = FALSE;
45 while (plen && *pfrom) {
55 const char *pend = ++pfrom;
56 char name[MAX_MACRO_NAME_LENGTH];
59 /* Find the end of macro */
60 while (*pend && *pend != '}') {
64 wassertl(0, "Unterminated macro expansion");
67 /* Pull out the macro name */
68 if (pend - pfrom >= MAX_MACRO_NAME_LENGTH) {
69 wassertl(0, "macro name too long");
72 strncpy(name, pfrom, pend-pfrom);
73 name[pend-pfrom] = '\0';
75 /* Look up the value in the hash table */
76 pval = shash_find (pvals, name);
79 /* Empty macro value */
82 if (pend[1] == quote) {
83 /* Start quote equals end quote: skip both */
87 /* Start quote not equals end quote: add both */
95 /* It was a quote, add it */
100 strncpy(pinto, pval, plen);
101 pinto += strlen(pval);
102 plen -= plen > strlen(pval) ? strlen(pval) : plen;
103 fdidsomething = TRUE;
126 wassertl(0, "macro expansion too long");
131 /* If we did something then recursivly expand any expanded macros */
133 char ainto[MAX_STRING_LENGTH];
134 _evalMacros(ainto, pvals, apinto, MAX_STRING_LENGTH);
135 strncpyz(apinto, ainto, alen);
140 mvsprintf(hTab *pvals, const char *pformat, va_list ap)
142 char ainto[MAX_STRING_LENGTH];
143 char atmp[MAX_STRING_LENGTH];
145 /* Recursivly evaluate all the macros in the string */
146 _evalMacros(ainto, pvals, pformat, MAX_STRING_LENGTH);
147 /* Evaluate all the arguments */
148 #if defined(HAVE_VSNPRINTF)
149 if (vsnprintf(atmp, MAX_STRING_LENGTH, ainto, ap) >= MAX_STRING_LENGTH)
151 fprintf(stderr, "Internal error: mvsprintf output truncated.\n");
157 wlen = vsprintf(atmp, ainto, ap);
159 if (wlen < 0 || wlen >= MAX_STRING_LENGTH)
161 wassertl(0, "mvsprintf overflowed.");
166 /* Recursivly evaluate any macros that were used as arguments */
167 _evalMacros(ainto, pvals, atmp, MAX_STRING_LENGTH);
169 /* Return a copy of the evaluated string. */
170 return Safe_strdup(ainto);
173 char *msprintf(hTab *pvals, const char *pformat, ...)
178 va_start(ap, pformat);
180 pret = mvsprintf(pvals, pformat, ap);
188 mfprintf(FILE *fp, hTab *pvals, const char *pformat, ...)
193 va_start(ap, pformat);
195 p = mvsprintf(pvals, pformat, ap);