Attachment 49108 Details for Bug 96739 – less boiled down test

less boiled down test

ioprob.c (text/x-csrc), 1.83 KB, created by Dr. David Alan Gilbert on 2020-08-24 09:34:39 UTC

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Creator: Dr. David Alan Gilbert

Created: 2020-08-24 09:34:39 UTC

Size: 1.83 KB

patch

obsolete

>#include <stdio.h>
>#include <stdlib.h>
>#include <string.h>
>
>typedef struct Error Error;
>typedef struct QemuOpts QemuOpts;
>typedef int (*cfunc_t)(int argc, char **argv);
>typedef void (*helpfunc_t)(void);
>typedef struct cmdinfo {
>  const char *name;
>  const char *altname;
>  cfunc_t cfunc;
>  int flags;
>  const char *args;
>  const char *oneline;
>  void (*help)(void);
>  unsigned long perm;
>} cmdinfo_t;
>;
>static cmdinfo_t *cmdtab;
>static int ncmds;
>void qemuio_add_command(const cmdinfo_t *ci) {
>  ++ncmds;
>  cmdtab = reallocarray(cmdtab, ncmds, sizeof(cmdinfo_t));
>  cmdtab[ncmds - 1] = *ci;
>}
>
>static const cmdinfo_t *find_command(const char *cmd)
>{
>    cmdinfo_t *ct;
>
>    for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) {
>        if (strcmp(ct->name, cmd) == 0 ||
>            (ct->altname && strcmp(ct->altname, cmd) == 0))
>        {
>            return (const cmdinfo_t *)ct;
>        }
>    }
>    return NULL;
>}
>
>static void help_oneline(const char *cmd, const cmdinfo_t *ct) {
>  if (cmd) {
>    printf("%s ", cmd);
>  } else {
>    printf("%s ", ct->name);
>  }
>}
>
>static void help_onecmd(const char *cmd, const cmdinfo_t *ct)
>{
>    help_oneline(cmd, ct);
>    if (ct->help) {
>        ct->help();
>    }
>}
>
>static void help_all(void) {
>  const cmdinfo_t *ct;
>  for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) {
>    help_oneline(ct->name, ct);
>  }
>}
>static int help_f(int argc, char **argv) {
>  const cmdinfo_t *ct;
>
>  if (argc == 1) {
>    help_all();
>    return 0;
>  }
>
>    ct = find_command(argv[1]);
>    if (ct == NULL) {
>        printf("command %s not found\n", argv[1]);
>        return -1;
>    }
>
>    help_onecmd(argv[1], ct);
>
>  return 0;
>}
>static const cmdinfo_t help_cmd = {
>    .name = "",
>    .altname = "",
>    .cfunc = help_f,
>    .args = "",
>    .oneline = "",
>};
>static void __attribute((constructor)) init_qemuio_commands(void) {
>  qemuio_add_command(&help_cmd);
>}

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Attachments on bug 96739: 49096 | 49108