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Updated C databuffer library

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niansa 2020-08-04 18:07:11 +02:00
parent 144f4ecd09
commit ba19b2d8b6
1 changed files with 12 additions and 6 deletions
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18
cport/databuffer.h
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@ -135,20 +135,26 @@ void db_readline(struct databuffer *db, FILE *input) { // Appends one line from
db_append(db, &thisdb); db_append(db, &thisdb);
} }
void runcmd(const char **command) { // Dumbly runs command int runcmd(const char **command, bool wait_exit) { // Dumbly runs command
fflush(stdout); fflush(stdout);
if (fork() == 0) { if (fork() == 0) {
execvp(command[0], command); execvp(command[0], command);
perror(command[0]); perror(command[0]);
} }
wait(0); if (wait_exit) {
int status;
wait(&status);
return status;
} else {
return 0;
}
} }
void db_cmdread(struct databuffer *db, const char **command) { // Appends output (stdout) of command to db void db_cmdread(struct databuffer *db, const char **command) { // Appends output (stdout) of command to db
struct databuffer thisdb; struct databuffer thisdb;
int stdout_backup = dup(1); int stdout_backup = dup(1);
dup2(memfd_create("pipe", 0), 1); dup2(memfd_create("pipe", 0), 1);
runcmd(command); runcmd(command, true);
FILE *proc_out = fdopen(1, "r"); FILE *proc_out = fdopen(1, "r");
fseek(proc_out, 0, SEEK_SET); fseek(proc_out, 0, SEEK_SET);
db_fread(db, proc_out); db_fread(db, proc_out);