1/* Copyright (c) 1985 Ceriel J.H. Jacobs */
  2
  3#include "process.h"
  4#include "commands.h"
  5#include "display.h"
  6#include "getcomm.h"
  7#include "getline.h"
  8#include "in_all.h"
  9#include "main.h"
 10#include "options.h"
 11#include "output.h"
 12#include "prompt.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  static char *dummies[3];
 60  long         arg;
 61
 62  if (!(nfiles = n)) {
 63    /*
 64     * Input from pipe
 65     */
 66    currentfile = "standard-input";
 67    /*
 68     * Take care that *(filenames - 1) and *(filenames + 1) are 0
 69     */
 70    filenames = &dummies[1];
 71    d_clean();
 72    do_clean();
 73  } else {
 74    filenames = argv;
 75    (void)nextfile(0);
 76  }
 77  *--argv = 0;
 78  if (startcomm) {
 79    n = getcomm(&arg);
 80    if (commands[n].c_flags & NEEDS_SCREEN) {
 81      redraw(0);
 82    }
 83    do_comm(n, arg);
 84    startcomm = 0;
 85  }
 86  redraw(1);
 87  if (setjmp(SetJmpBuf)) {
 88    nflush();
 89    redraw(1);
 90  }
 91  DoneSetJmp = 1;
 92  for (;;) {
 93    interrupt = 0;
 94    n         = getcomm(&arg);
 95    do_comm(n, arg);
 96  }
 97}
 98
 99/*
100 * Get the next file the user asks for.
101 */
102
103int
104nextfile(int n)
105{
106  int i;
107
108  if ((i = filecount + n) >= nfiles || i < 0) {
109    return 1;
110  }
111  filecount = i;
112  visitfile(filenames[i]);
113  return 0;
114}