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progtool
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issue_40.arc
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VIEW.C
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1988-01-11
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1KB
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65 lines
/* Code from Kaypro column in Micro Cornucopia Issue #40 */
/* Figure 1 - VIEW, Displays CP/M text file to the screen */
/* Written for Small-C compiler vers 2.03 (ASM)
Pauses every 22 lines; strips high bit so that
WordStar files will display properly on terminals
with graphics displays.
*/
#include <stdioa.h>
#include "iolib.asm"
#include "call.asm"
#define MASK 127 /* high bit mask = 01111111b */
#define NOCCARGC
int infile;
char fname[15];
main(argc,argv) int argc, argv[]; {
int line, ch;
if (argc == 2)
infile = fopen(argv[1],"r");
else {
fputs("Name of text file to view?",stdout);
gets(fname);
infile = fopen(fname,"r");
}
if (infile == NULL) {
fputs("File not found.",stdout);
exit();
}
line = 1;
while ((ch = getc(infile)) != EOF ) {
ch &= MASK; /* strip high bit */
putchar(ch);
if (ch == CR) {
line++;
if ((line % 22) == 0)
pause();
}
}
fclose(infile);
}
/*
* Pause and wait for user to hit any key.
* Key pressed does not echo to the console.
* Control-C will exit program.
*/
pause() {
int c;
while ((c = cpm(6,255)) == 0);
if (c == 3) exit();
}