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Simtel MSDOS 1997 September
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Simtel-MSDOS-Sep1997-CD1.iso
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disc1
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00_start
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uucat.c
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C/C++ Source or Header
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1996-02-24
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2KB
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145 lines
/* uucat.c */
#include <stdio.h>
#include <string.h>
#define TRUE 1
#define FALSE 0
#define LENGTH 150
extern void uuread();
void main(argc, argv)
int argc;
char *argv[];
{
int error, argno;
FILE *infile;
if (argc < 2)
uuread(stdin);
else
{
error = FALSE;
for (argno = 1; !error && argno < argc; argno++)
{
if ((infile = fopen(argv[argno], "r")) == NULL)
{
error = TRUE;
fprintf(stderr, "uucat: Can't open '%s' for input.\n", argv[argno]);
}
else
{
uuread(infile);
fclose(infile);
}
}
}
exit(0);
}
void uuread(infile)
FILE *infile;
{
char *s2, *s1, *s0, *tmp_s;
int length;
static char s[3 * (LENGTH + 1)];
static int echo_on = FALSE, started = FALSE, just_finished = FALSE;
static int line_length = 0, lines_to_go = 0;
s0 = s;
s1 = s0 + (LENGTH + 1);
s2 = s1 + (LENGTH + 1);
s0[0] = s1[0] = s2[0] = '\0'; /* Clear strings */
while (fgets(s0, LENGTH, infile) != NULL)
{
s0[LENGTH] = '\0'; /* Make sure string is terminated */
if (just_finished)
{
if (strncmp(s0, "size ", 5) == 0)
{
fputs(s0, stdout);
s0[0] = '\0';
}
just_finished = FALSE;
}
if (!started)
{
if (strncmp(s0, "begin ", 6) == 0)
{
started = echo_on = TRUE;
line_length = 0;
lines_to_go = 0;
}
}
else /* started */
{
length = strlen(s0);
if (line_length == 0)
line_length = length;
if (echo_on)
{
lines_to_go = 0;
if (s0[0] != 'M' || length != line_length)
{
echo_on = FALSE;
lines_to_go = 2; /* Lines to go before 'end' is expected */
if (s0[0] == ' ' || s0[0] == '`')
lines_to_go = 1;
}
}
else /* !echo_on */
{
if (s0[0] == 'M' && length == line_length)
echo_on = TRUE;
else if (lines_to_go > 0)
{
if (lines_to_go == 2)
{
if (s0[0] == ' ' || s0[0] == '`')
lines_to_go = 1;
else
lines_to_go = 0; /* Unexpected line, so break off */
}
else if (lines_to_go == 1)
{
if (strcmp(s0, "end\n") == 0)
{
fputs(s2, stdout);
fputs(s1, stdout);
fputs(s0, stdout);
lines_to_go = 0; /* Done. Break off */
just_finished = TRUE;
started = FALSE;
}
else
lines_to_go = 0; /* Unexpected line, so break off */
}
}
}
}
if (echo_on)
{
fputs(s0, stdout);
s0[0] = '\0';
}
tmp_s = s2;
s2 = s1;
s1 = s0;
s0 = tmp_s;
}
}