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pw-dot: using output - will write the output to stdout

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This enables single-liners for viewing the graph in applicable shells.
This commit is contained in:
Erkki Seppälä 2021-04-02 11:33:19 +03:00
parent 4a0b7fa9b8
commit 21a36f3c51
2 changed files with 15 additions and 10 deletions
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23
src/tools/pw-dot.c
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@ -493,16 +493,21 @@ static int draw_graph(struct data *d, const char *path)
/* draw the footer */
dot_str_add(&d->dot_str, "}\n");
/* open the file */
fp = fopen(path, "w");
if (fp == NULL) {
printf("open error: could not open %s for writing\n", path);
return -1;
}
if (strcmp(path, "-") == 0) {
/* wire the dot graph into to stdout */
fputs(d->dot_str, stdout);
} else {
/* open the file */
fp = fopen(path, "w");
if (fp == NULL) {
printf("open error: could not open %s for writing\n", path);
return -1;
}
/* wire the dot graph into the file */
fputs(d->dot_str, fp);
fclose(fp);
/* wire the dot graph into the file */
fputs(d->dot_str, fp);
fclose(fp);
}
return 0;
}