1/* Copyright (c) 1985 Ceriel J.H. Jacobs */
  2
  3#include "in_all.h"
  4#include "process.h"
  5#include "commands.h"
  6#include "display.h"
  7#include "prompt.h"
  8#include "getline.h"
  9#include "getcomm.h"
 10#include "main.h"
 11#include "options.h"
 12#include "output.h"
 13
 14jmp_buf SetJmpBuf;
 15int DoneSetJmp;
 16int stdf;
 17int filecount;
 18char **filenames;
 19char *currentfile;
 20long maxpos;
 21
 22static int nfiles; /* Number of filenames on command line */
 23
 24/*
 25 * Visit a file, file name is "fn".
 26 */
 27
 28void
 29visitfile(char *fn)
 30{
 31	struct stat statbuf;
 32
 33	if (stdf > 0) {
 34		/*
 35		 * Close old input file
 36		 */
 37		(void)close(stdf);
 38	}
 39	currentfile = fn;
 40	if ((stdf = open(fn, O_RDONLY, 0)) < 0) {
 41		error(": could not open");
 42		maxpos = 0;
 43	} else { /* Get size for percentage in prompt */
 44		(void)fstat(stdf, &statbuf);
 45		maxpos = statbuf.st_size;
 46	}
 47	do_clean();
 48	d_clean();
 49}
 50
 51/*
 52 * process the input files, one by one.
 53 * If there is none, input is from a pipe.
 54 */
 55
 56void
 57processfiles(int n, char **argv)
 58{
 59
 60	static char *dummies[3];
 61	long arg;
 62
 63	if (!(nfiles = n)) {
 64		/*
 65		 * Input from pipe
 66		 */
 67		currentfile = "standard-input";
 68		/*
 69		 * Take care that *(filenames - 1) and *(filenames + 1) are 0
 70		 */
 71		filenames = &dummies[1];
 72		d_clean();
 73		do_clean();
 74	} else {
 75		filenames = argv;
 76		(void)nextfile(0);
 77	}
 78	*--argv = 0;
 79	if (startcomm) {
 80		n = getcomm(&arg);
 81		if (commands[n].c_flags & NEEDS_SCREEN) {
 82			redraw(0);
 83		}
 84		do_comm(n, arg);
 85		startcomm = 0;
 86	}
 87	redraw(1);
 88	if (setjmp(SetJmpBuf)) {
 89		nflush();
 90		redraw(1);
 91	}
 92	DoneSetJmp = 1;
 93	for (;;) {
 94		interrupt = 0;
 95		n = getcomm(&arg);
 96		do_comm(n, arg);
 97	}
 98}
 99
100/*
101 * Get the next file the user asks for.
102 */
103
104int
105nextfile(int n)
106{
107	int i;
108
109	if ((i = filecount + n) >= nfiles || i < 0) {
110		return 1;
111	}
112	filecount = i;
113	visitfile(filenames[i]);
114	return 0;
115}