UNIX — универсальная среда программирования - Керниган Брайан Уилсон
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Интервал:
Закладка:
for (i = 1; i < argc; i++) {
fp = efopen(argv[i], "r");
print(fp, pagesize);
fclose(fp);
}
exit(0);
}
print(fp, pagesize) /* print fp in pagesize chunks */
FILE *fp;
int pagesize;
{
static int lines = 0; /* number of lines so far */
char buf[BUFSIZ];
while (fgets(buf, sizeof buf, fp) != NULL)
if (++lines < pagesize)
fputs(buf, stdout);
else {
buf[strlen(buf)-1] = ' ';
fputs(buf, stdout);
fflush(stdout);
ttyin();
lines = 0;
}
}
#include "ttyin2.c"
#include "efopen.c"
3.8.40 p3.c
/* p: print input in chunks (version 3) */
#include <stdio.h>
#define PAGESIZE 22
char *progname; /* program name for error message */
main(argc, argv)
int argc;
char *argv[];
{
FILE *fp, *efopen();
int i, pagesize = PAGESIZE;
char *p, *getenv();
progname = argv[0];
if ((p=getenv("PAGESIZE")) != NULL)
pagesize = atoi(p);
if (argc > 1 && argv[1][0] == '-') {
pagesize = atoi(&argv[1][1]);
argc--;
argv++;
}
if (argc == 1)
print(stdin, pagesize);
else
for (i = 1; i < argc; i++) {
fp = efopen(argv[i], "r");
print(fp, pagesize);
fclose(fp);
}
exit(0);
}
print(fp, pagesize) /* print fp in pagesize chunks */
FILE *fp;
int pagesize;
{
static int lines = 0; /* number of lines so far */
char buf[BUFSIZ];
while (fgets(buf, sizeof buf, fp) != NULL)
if (++lines < pagesize)
fputs(buf, stdout);
else {
buf[strlen(buf)-1] = ' ';
fputs(buf, stdout);
fflush(stdout);
ttyin();
lines = 0;
}
}
#include "ttyin2.c"
#include "efopen.c"
3.8.41 p4.c
/* p: print input in chunks (version 4) */
#include <stdio.h>
#define PAGESIZE 22
char *progname; /* program name for error message */
main(argc, argv)
int argc;
char *argv[];
{
FILE *fp, *efopen();
int i, pagesize = PAGESIZE;
char *p, *getenv(), buf[BUFSIZ];
progname = argv[0];
if ((p=getenv("PAGESIZE")) != NULL)
pagesize = atoi(p);
if (argc > 1 && argv[1][0] == '-') {
pagesize = atoi(&argv[1][1]);
argc--;
argv++;
}
if (argc == 1)
print(stdin, pagesize);
else
for (i = 1; i < argc; i++)
switch (spname(argv[i], buf)) {
case -1: /* no match possible */
fp = efopen(argv[i], "r");
break;
case 1: /* corrected */
fprintf (stderr, ""%s"? ", buf);
if (ttyin() == 'n')
