DeforaOS/utils
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Implemented -o, Displaying time, Code cleanup

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This commit is contained in:
Pierre Pronchery 2007-05-09 21:13:18 +00:00
parent f3ddf49303
commit 83088b30bb
1 changed files with 64 additions and 5 deletions
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69
src/pr.c
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@ -3,6 +3,7 @@
#include <sys/stat.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
@ -16,6 +17,7 @@ typedef struct _Prefs
int flags;
int lines;
int width;
int offset;
} Prefs;
#define PREFS_d 1
#define PREFS_t 2
@ -58,25 +60,38 @@ static int _pr_error(char const * message, int ret)
return ret;
}
/* _pr_do */
static void _do_offset(int offset);
static void _do_header(Prefs * prefs, time_t const mtime, char const * filename,
size_t page);
static void _do_footer(Prefs * prefs);
static int _pr_do(Prefs * prefs, FILE * fp, char const * filename)
{
struct stat st;
char * buf;
size_t len;
int nb = 0;
size_t page = 1;
if(fstat(fileno(fp), &st) != 0)
{
st.st_mtime = 0;
_pr_error(filename, 0);
}
if((buf = malloc(prefs->width + 1)) == NULL)
return _pr_error("malloc", 1);
while(fgets(buf, prefs->width, fp) != NULL)
{
if(nb == 0 && !(prefs->flags & PREFS_t) && prefs->lines > 10)
{
printf("\n\n%s%s%u\n\n\n", filename, " Page ", page++);
nb = 5;
_do_header(prefs, st.st_mtime, filename, page++);
nb = 10;
}
_do_offset(prefs->offset); /* FIXME not if truncated line */
if((len = strlen(buf)) > 0 && buf[len - 1] == '\n'
&& prefs->flags & PREFS_d)
buf[len++] = '\n';
buf[len++] = '\n'; /* XXX with offset? */
if(fwrite(buf, sizeof(char), len, stdout) != len)
{
free(buf);
@ -85,7 +100,7 @@ static int _pr_do(Prefs * prefs, FILE * fp, char const * filename)
if(nb++ == prefs->lines && prefs->lines > 10
&& !(prefs->flags & PREFS_t))
{
fputs("\n\n\n\n\n\n", stdout);
_do_footer(prefs);
nb = 0;
}
}
@ -96,6 +111,44 @@ static int _pr_do(Prefs * prefs, FILE * fp, char const * filename)
return 0;
}
static void _do_offset(int offset)
{
while(offset-- > 0)
fputc(' ', stdout);
}
static void _do_header(Prefs * prefs, time_t const mtime, char const * filename,
size_t page)
{
struct tm tm;
char buf[19];
int nb;
for(nb = 0; nb < 5; nb++)
{
_do_offset(prefs->offset);
if(nb == 2)
{
localtime_r(&mtime, &tm);
strftime(buf, sizeof(buf) - 1, "%b %e %Y %H:%M", &tm);
buf[sizeof(buf) - 1] = '\0';
printf("%s %s%s%u", buf, filename, " Page ", page);
}
fputc('\n', stdout);
}
}
static void _do_footer(Prefs * prefs)
{
int i;
for(i = 0; i < 5; i++)
{
_do_offset(prefs->offset);
fputc('\n', stdout);
}
}
/* usage */
static int _usage(void)
@ -119,7 +172,7 @@ int main(int argc, char * argv[])
memset(&prefs, 0, sizeof(prefs));
prefs.lines = 66;
prefs.width = 72;
while((o = getopt(argc, argv, "dl:tw:")) != -1)
while((o = getopt(argc, argv, "dl:o:tw:")) != -1)
switch(o)
{
case 'd':
@ -131,6 +184,12 @@ int main(int argc, char * argv[])
|| prefs.lines <= 0)
return _usage();
break;
case 'o':
prefs.offset = strtol(optarg, &p, 10);
if(optarg[0] == '\0' || *p != '\0'
|| prefs.lines < 0)
return _usage();
break;
case 't':
prefs.flags |= PREFS_t;
break;