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) {
50 /* write previous quote */
59 const char *pend = ++pfrom;
60 char name[MAX_MACRO_NAME_LENGTH];
63 /* Find the end of macro */
64 while (*pend && *pend != '}') {
68 wassertl(0, "Unterminated macro expansion");
71 /* Pull out the macro name */
72 if (pend - pfrom >= MAX_MACRO_NAME_LENGTH) {
73 wassertl(0, "macro name too long");
76 strncpy(name, pfrom, pend-pfrom);
77 name[pend-pfrom] = '\0';
79 /* Look up the value in the hash table */
80 pval = shash_find (pvals, name);
83 /* Empty macro value */
86 if (pend[1] == quote) {
87 /* Start quote equals end quote: skip both */
91 /* Start quote not equals end quote: add both */
99 /* It was a quote, add it */
104 strncpy(pinto, pval, plen);
105 pinto += strlen(pval);
106 plen -= plen > strlen(pval) ? strlen(pval) : plen;
107 fdidsomething = TRUE;
131 wassertl(0, "macro expansion too long");
136 /* If we did something then recursivly expand any expanded macros */
138 char ainto[MAX_STRING_LENGTH];
139 _evalMacros(ainto, pvals, apinto, MAX_STRING_LENGTH);
140 strncpyz(apinto, ainto, alen);
145 mvsprintf(hTab *pvals, const char *pformat, va_list ap)
147 char ainto[MAX_STRING_LENGTH];
148 char atmp[MAX_STRING_LENGTH];
150 /* Recursivly evaluate all the macros in the string */
151 _evalMacros(ainto, pvals, pformat, MAX_STRING_LENGTH);
152 /* Evaluate all the arguments */
153 #if defined(HAVE_VSNPRINTF)
154 if (vsnprintf(atmp, MAX_STRING_LENGTH, ainto, ap) >= MAX_STRING_LENGTH)
156 fprintf(stderr, "Internal error: mvsprintf output truncated.\n");
162 wlen = vsprintf(atmp, ainto, ap);
164 if (wlen < 0 || wlen >= MAX_STRING_LENGTH)
166 wassertl(0, "mvsprintf overflowed.");
171 /* Recursivly evaluate any macros that were used as arguments */
172 _evalMacros(ainto, pvals, atmp, MAX_STRING_LENGTH);
174 /* Return a copy of the evaluated string. */
175 return Safe_strdup(ainto);
178 char *msprintf(hTab *pvals, const char *pformat, ...)
183 va_start(ap, pformat);
185 pret = mvsprintf(pvals, pformat, ap);
193 mfprintf(FILE *fp, hTab *pvals, const char *pformat, ...)
198 va_start(ap, pformat);
200 p = mvsprintf(pvals, pformat, ap);