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;
44 while (plen && *pfrom)
48 const char *pend = ++pfrom;
49 char name[MAX_MACRO_NAME_LENGTH];
52 while (*pend && *pend != '}')
58 wassertl(0, "Unterminated macro expansion");
60 /* Pull out the macro name */
61 if (pend - pfrom >= MAX_MACRO_NAME_LENGTH)
63 wassertl(0, "macro name too long");
66 strncpy(name, pfrom, pend-pfrom);
67 name[pend-pfrom] = '\0';
69 /* Look up the value in the hash table */
70 pval = shash_find (pvals, name);
74 fprintf (stderr, "Cant find macro \"%s\"\n", name);
75 wassertl (0, "Invalid macro name");
80 strncpy(pinto, pval, plen);
81 pinto += strlen(pval);
82 plen -= plen > strlen(pval) ? strlen(pval) : plen;
98 wassertl(0, "macro expansion too long");
103 /* If we did something then recursivly expand any expanded macros */
106 char ainto[MAX_STRING_LENGTH];
107 _evalMacros(ainto, pvals, apinto, MAX_STRING_LENGTH);
108 strncpyz(apinto, ainto, alen);
113 mvsprintf(hTab *pvals, const char *pformat, va_list ap)
115 char ainto[MAX_STRING_LENGTH];
116 char atmp[MAX_STRING_LENGTH];
118 /* Recursivly evaluate all the macros in the string */
119 _evalMacros(ainto, pvals, pformat, MAX_STRING_LENGTH);
120 /* Evaluate all the arguments */
121 #if defined(HAVE_VSNPRINTF)
122 if (vsnprintf(atmp, MAX_STRING_LENGTH, ainto, ap) >= MAX_STRING_LENGTH)
124 fprintf(stderr, "Internal error: mvsprintf output truncated.\n");
130 wlen = vsprintf(atmp, ainto, ap);
132 if (wlen < 0 || wlen >= MAX_STRING_LENGTH)
134 wassertl(0, "mvsprintf overflowed.");
139 /* Recursivly evaluate any macros that were used as arguments */
140 _evalMacros(ainto, pvals, atmp, MAX_STRING_LENGTH);
142 /* Return a copy of the evaluated string. */
143 return Safe_strdup(ainto);
146 char *msprintf(hTab *pvals, const char *pformat, ...)
151 va_start(ap, pformat);
153 pret = mvsprintf(pvals, pformat, ap);
161 mfprintf(FILE *fp, hTab *pvals, const char *pformat, ...)
166 va_start(ap, pformat);
168 p = mvsprintf(pvals, pformat, ap);