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Zep 1.4 small code reductions

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This commit is contained in:
Hugh Barney 2017-04-14 14:10:42 +01:00
parent e266221618
commit 6f8d31577e
1 changed files with 15 additions and 33 deletions
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48
zep.c
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@ -15,7 +15,7 @@
#include <termios.h>
#define E_NAME "zep"
#define E_VERSION "v1.3"
#define E_VERSION "v1.4"
#define E_LABEL "Zep:"
#define B_MODIFIED 0x01 /* modified buffer */
@ -68,7 +68,7 @@ int done;
char_t *input;
int msgflag;
char msgline[TEMPBUF];
char temp[TEMPBUF];
keymap_t *key_return;
keymap_t *key_map;
buffer_t *curbp;
@ -97,21 +97,20 @@ buffer_t* new_buffer()
void fatal(char *msg)
{
move(LINES-1, 0);
refresh();
noraw();
endwin();
printf("\n" E_NAME " " E_VERSION ": %s\n", msg);
exit(1);
}
void msg(char *msg, ...)
int msg(char *msg, ...)
{
va_list args;
va_start(args, msg);
(void)vsprintf(msgline, msg, args);
va_end(args);
msgflag = TRUE;
return FALSE;
}
/* Given a buffer offset, convert it to a pointer into the buffer */
@ -147,19 +146,13 @@ int growgap(buffer_t *bp, point_t n)
newlen = buflen + n * sizeof (char_t);
if (buflen == 0) {
if (newlen < 0 || MAX_SIZE_T < newlen) fatal("Failed to allocate required memory.\n");
if (newlen < 0 || MAX_SIZE_T < newlen) fatal("Failed to allocate required memory");
new = (char_t*) malloc((size_t) newlen);
if (new == NULL) fatal("Failed to allocate required memory.\n");
if (new == NULL) fatal("Failed to allocate required memory");
} else {
if (newlen < 0 || MAX_SIZE_T < newlen) {
msg("Failed to allocate required memory");
return (FALSE);
}
if (newlen < 0 || MAX_SIZE_T < newlen) return msg("Failed to allocate required memory");
new = (char_t*) realloc(bp->b_buf, (size_t) newlen);
if (new == NULL) {
msg("Failed to allocate required memory"); /* Report non-fatal error. */
return (FALSE);
}
if (new == NULL) return msg("Failed to allocate required memory");
}
/* Relocate pointers in new buffer and append the new
@ -216,27 +209,17 @@ int insert_file(char *fn, int modflag)
size_t len;
struct stat sb;
if (stat(fn, &sb) < 0) {
msg("Failed to find file \"%s\".", fn);
return (FALSE);
}
if (MAX_SIZE_T < sb.st_size) {
msg("File \"%s\" is too big to load.", fn);
return (FALSE);
}
if (stat(fn, &sb) < 0) return msg("Failed to find file \"%s\".", fn);
if (MAX_SIZE_T < sb.st_size) return msg("File \"%s\" is too big to load.", fn);
if (curbp->b_egap - curbp->b_gap < sb.st_size * sizeof (char_t) && !growgap(curbp, sb.st_size))
return (FALSE);
if ((fp = fopen(fn, "r")) == NULL) {
msg("Failed to open file \"%s\".", fn);
return (FALSE);
}
if ((fp = fopen(fn, "r")) == NULL) return msg("Failed to open file \"%s\".", fn);
curbp->b_point = movegap(curbp, curbp->b_point);
curbp->b_gap += len = fread(curbp->b_gap, sizeof (char), (size_t) sb.st_size, fp);
if (fclose(fp) != 0) {
msg("Failed to close file \"%s\".", fn);
return (FALSE);
}
if (fclose(fp) != 0) return msg("Failed to close file \"%s\".", fn);
curbp->b_flags &= (modflag ? B_MODIFIED : ~B_MODIFIED);
msg("File \"%s\" %ld bytes read.", fn, len);
return (TRUE);
@ -373,6 +356,7 @@ point_t lncolumn(buffer_t *bp, point_t offset, int column)
void modeline(buffer_t *bp)
{
int i;
char temp[TEMPBUF];
char mch;
standout();
@ -755,8 +739,6 @@ int main(int argc, char **argv)
if (scrap != NULL) free(scrap);
if (curbp != NULL) free(curbp);
move(MSGLINE, 0);
refresh();
noraw();
endwin();
return 0;