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seconds: tolerate trailing whitespace in dates

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This allows handling dates with leading and trailing whitespace,
including newlines.
This commit is contained in:
Ori Bernstein 2020-09-01 19:03:17 -07:00
parent e9cd41467e
commit e0278f6917
1 changed files with 15 additions and 7 deletions
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20
sys/src/cmd/seconds.c
View file

@ -1,5 +1,6 @@
#include <u.h>
#include <libc.h>
#include <ctype.h>
char *knownfmt[] = {
/* asctime */
@ -57,6 +58,16 @@ char *zonefmt[] = {
nil,
};
static int
nojunk(char *p)
{
while(isspace(*p))
p++;
if(*p == '\0')
return 1;
werrstr("trailing junk");
return 0;
}
static void
usage(void)
@ -89,24 +100,21 @@ main(int argc, char **argv)
sysfatal("bad local time: %r");
for(i = 0; i < argc; i++){
if(fmt != nil){
if(tmparse(&tm, fmt, argv[i], tz, &ep) != nil && *ep == 0)
if(tmparse(&tm, fmt, argv[i], tz, &ep) && nojunk(ep))
goto Found;
}else{
for(f = knownfmt; *f != nil; f++)
if(tmparse(&tm, *f, argv[i], tz, &ep) != nil && *ep == 0)
if(tmparse(&tm, *f, argv[i], tz, &ep) != nil && nojunk(ep))
goto Found;
for(df = datefmt; *df; df++)
for(tf = timefmt; *tf; tf++)
for(zf = zonefmt; *zf; zf++){
snprint(buf, sizeof(buf), "%s%s%s", *df, *tf, *zf);
if(tmparse(&tm, buf, argv[i], tz, &ep) != nil && *ep == 0)
if(tmparse(&tm, buf, argv[i], tz, &ep) != nil && nojunk(ep))
goto Found;
}
}
if(*ep == 0)
sysfatal("tmparse: %r");
else
sysfatal("tmparse: trailing junk");
Found:
print("%lld\n", tmnorm(&tm));
}