aw/st
1
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add error control to iofile

Browse Source 
write can write less bytes than we request, so it is necessary check the
return value, in case of error print a message and don't continnue writing
in the file.
---
 st.c |   39 ++++++++++++++++++++++++++++++---------
 1 file changed, 30 insertions(+), 9 deletions(-)
This commit is contained in:
Roberto E. Vargas Caballero 2012-10-28 06:27:42 +01:00
parent 2e38ab7afd
commit ee3fbeb6c8
1 changed files with 30 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
st.c
View File

@ -340,6 +340,7 @@ static int utf8encode(long *, char *);
static int utf8size(char *); static int utf8size(char *);
static int isfullutf8(char *, int); static int isfullutf8(char *, int);
static ssize_t xwrite(int, char *, size_t);
static void *xmalloc(size_t); static void *xmalloc(size_t);
static void *xrealloc(void *, size_t); static void *xrealloc(void *, size_t);
static void *xcalloc(size_t nmemb, size_t size); static void *xcalloc(size_t nmemb, size_t size);
@ -379,6 +380,21 @@ static char *opt_embed = NULL;
static char *opt_class = NULL; static char *opt_class = NULL;
static char *opt_font = NULL; static char *opt_font = NULL;
ssize_t
xwrite(int fd, char *s, size_t len) {
size_t aux = len;
while(len > 0) {
ssize_t r = write(fd, s, len);
if(r < 0)
return r;
len -= r;
s += r;
}
return aux;
}
void * void *
xmalloc(size_t len) { xmalloc(size_t len) {
void *p = malloc(len); void *p = malloc(len);
@ -926,16 +942,15 @@ ttynew(void) {
cmdfd = m; cmdfd = m;
signal(SIGCHLD, sigchld); signal(SIGCHLD, sigchld);
if(opt_io) { if(opt_io) {
if(!strcmp(opt_io, "-")) { iofd = (!strcmp(opt_io, "-")) ?
iofd = STDOUT_FILENO; STDOUT_FILENO :
} else { open(opt_io, O_WRONLY | O_CREAT, 0666);
if((iofd = open(opt_io, O_WRONLY | O_CREAT, 0666)) < 0) { if(iofd < 0) {
fprintf(stderr, "Error opening %s:%s\n", fprintf(stderr, "Error opening %s:%s\n",
opt_io, strerror(errno)); opt_io, strerror(errno));
} }
} }
} }
}
} }
void void
@ -1793,8 +1808,14 @@ tputc(char *c, int len) {
uchar ascii = *c; uchar ascii = *c;
bool control = ascii < '\x20' || ascii == 0177; bool control = ascii < '\x20' || ascii == 0177;
if(iofd != -1) if(iofd != -1) {
write(iofd, c, len); if (xwrite(iofd, c, len) < 0) {
fprintf(stderr, "Error writting in %s:%s\n",
opt_io, strerror(errno));
close(iofd);
iofd = -1;
}
}
/* /*
* STR sequences must be checked before of anything * STR sequences must be checked before of anything
* because it can use some control codes as part of the sequence * because it can use some control codes as part of the sequence