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mdb-sql: Simplify handling files loaded by ":r"

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:r is an undocumented command to load SQL files from the msb-sql prompt
This commit is contained in:
James Woodcock 2020-09-19 11:29:41 +01:00
parent eab60a6060
commit 833985043f
1 changed files with 26 additions and 40 deletions
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66
src/util/mdb-sql.c
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@ -156,40 +156,6 @@ do_set_cmd(MdbSQL *sql, char *s)
}
}
int
read_file(char *s, int line, unsigned int *bufsz, char *mybuf)
{
char *fname;
FILE *in;
char buf[256];
unsigned int cursz = 0;
int lines = 0;
fname = s;
while (*fname && *fname==' ') fname++;
if (! (in = fopen(fname, "r"))) {
fprintf(stderr,"Unable to open file %s\n", fname);
mybuf[0]=0;
return 0;
}
while (fgets(buf, 255, in)) {
cursz += strlen(buf) + 1;
if (cursz > (*bufsz)) {
(*bufsz) *= 2;
mybuf = (char *) realloc(mybuf, *bufsz);
}
strcat(mybuf, buf);
#ifdef HAVE_READLINE_HISTORY
/* don't record blank lines */
if (strlen(buf)) add_history(buf);
#endif
strcat(mybuf, "\n");
lines++;
printf("%d => %s",line+lines, buf);
}
return lines;
}
void
run_query(FILE *out, MdbSQL *sql, char *mybuf, char *delimiter)
{
@ -370,6 +336,7 @@ main(int argc, char **argv)
char *home = getenv("HOME");
char *histpath;
char *delimiter = NULL;
int in_from_colon_r = 0;
GOptionEntry entries[] = {
@ -443,14 +410,19 @@ main(int argc, char **argv)
if (s) free(s);
if (in) {
s=malloc(bufsz);
s=calloc(bufsz, 1);
if (!fgets(s, bufsz, in)) {
// Backwards compatibility with older MDBTools
// Files read from the command line had an
// implicit "go" at the end
if (strlen(mybuf))
if (!in_from_colon_r && strlen(mybuf))
strcpy(s, "go");
else
else if (in_from_colon_r) {
line = 0;
fclose(in);
in = NULL;
in_from_colon_r = 0;
} else
break;
} else if (s[strlen(s)-1]=='\n')
s[strlen(s)-1]=0;
@ -475,7 +447,19 @@ main(int argc, char **argv)
line = 0;
mybuf[0]='\0';
} else if (!strncmp(s,":r",2)) {
line += read_file(&s[2], line, &bufsz, mybuf);
char *fname = &s[2];
if (in) {
fprintf(stderr, "Can not handle nested opens\n");
} else {
while (*fname && isspace(*fname))
fname++;
if (!(in = fopen(fname, "r"))) {
fprintf(stderr,"Unable to open file %s\n", fname);
mybuf[0]=0;
} else {
in_from_colon_r = 1;
}
}
} else {
char *p;
@ -484,8 +468,10 @@ main(int argc, char **argv)
mybuf = (char *) g_realloc(mybuf, bufsz);
}
#ifdef HAVE_READLINE_HISTORY
/* don't record blank lines, or lines read from files */
if (!in && strlen(s)) add_history(s);
/* don't record blank lines, or lines read from files
* specified on the command line */
if ((!in || in_from_colon_r) && strlen(s))
add_history(s);
#endif
strcat(mybuf,s);
/* preserve line numbering for the parser */