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COMSUB.H
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1991-01-03
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/*
* comsub.h - include file for routines to perform command substitution
* and environment variable parsing and expansion
*
* Author: R. Brittain 4/11/90
* This code placed in the public domain
*
*/
#include <stdio.h>
#include "popen.h"
#define MEMCHECK(x) if ((x) == NULL) fatal("Out of memory",1)
#define TRUE (1)
#define FALSE (0)
#define MAXARGLINE 127
#ifdef UNIXCOMPAT
#define ENV '$' /* character prefacing environment vars */
#define BKQ '`' /* character used to quote command subst */
#define EXE '@' /* character to preface .exe/.com commands */
#define strupr(x) (x) /* disable upper-casing env-vars */
#else
#define ENV '%' /* character prefacing environment vars */
#define BKQ '`' /* character used to quote command subst */
#define EXE '@' /* character to preface .exe/.com commands */
#endif
typedef struct { /* structure to use for growing string types */
char *b; /* base of string */
char *p; /* current "head" of string */
int len; /* length allocated */
int inc; /* how much to grow by each time we fill up */
} estring;
/* prototypes */
void fatal(char *msg, int status);
char *endptr(char *p);
char *mfgets(FILE *);
int expand_backquotes(int *argc, char ***argv);
int rebuild_argv(int *argc, char ***argv);
char *expand_env(char *s);
char *addstring(estring *es, char *add, int count);