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44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
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/*
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* $Id: macros.h,v 1.1 1997/03/14 06:22:27 gdr Exp $
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*
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* PUTBAK
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*
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* Push character back into input stream. we use the push-back buffer
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* stored with macros.
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*/
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#define PUTBAK(c) \
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{ \
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if (mac.ppb == NULL) { /* first time executing this code */ \
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mac.ppb = mac.pbb; \
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*mac.ppb = c; \
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} else if (mac.ppb < mac.pbb + MAXPBB) { \
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mac.ppb++; \
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*(mac.ppb) = c; \
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} else { \
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errx(-1, "push back buffer overflow (%d chars)", MAXPBB); \
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} \
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}
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/* NGETC -- get character from input file or push back buffer */
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#define NGETC(infp) ((mac.ppb >= mac.pbb) ? *mac.ppb-- : getc(infp))
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typedef struct macros_t {
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char *mnames[MXMDEF]; /* table of ptrs to macro names */
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int lastp; /* index to last mname */
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char *emb; /* next char avail in macro defn buf */
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char mb[MACBUF]; /* table of macro definitions */
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char *ppb; /* pointer into push back buffer */
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char pbb[MAXPBB]; /* push back buffer */
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} macros_t;
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extern macros_t mac;
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void initMacros (void);
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void defmac (char *line, FILE *infp);
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char *getmac (char *name);
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void maceval (char *p, char *m);
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void printmac (int opt);
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int putstr (const char *name, const char *p);
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char *getstr (char *name);
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