1 files changed, 501 insertions, 0 deletions
diff --git a/debian/vendor-h2o/deps/mruby/mrbgems/mruby-bin-debugger/tools/mrdb/cmdmisc.c b/debian/vendor-h2o/deps/mruby/mrbgems/mruby-bin-debugger/tools/mrdb/cmdmisc.c
new file mode 100644
index 0000000..5984b62
--- /dev/null
+++ b/debian/vendor-h2o/deps/mruby/mrbgems/mruby-bin-debugger/tools/mrdb/cmdmisc.c
@@ -0,0 +1,501 @@
+/*
+** cmdmisc.c - mruby debugger miscellaneous command functions
+**
+*/
+
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "apilist.h"
+#include <mruby/compile.h>
+
+typedef struct help_msg {
+  const char *cmd1;
+  const char *cmd2;
+  const char *short_msg;
+  const char *long_msg;
+} help_msg;
+
+static help_msg help_msg_list[] = {
+  {
+    "b[reak]", NULL, "Set breakpoint",
+    "Usage: break [file:]line\n"
+    "       break [class:]method\n"
+    "\n"
+    "Set breakpoint at specified line or method.\n"
+    "If \'[file:]line\' is specified, break at start of code for that line (in a file).\n"
+    "If \'[class:]method\' is specified, break at start of code for that method (of the class).\n"
+  },
+  {
+    "c[ontinue]", NULL, "Continue program being debugged",
+    "Usage: continue [N]\n"
+    "\n"
+    "Continue program stopped by a breakpoint.\n"
+    "If N, which is non negative value, is passed,\n"
+    "proceed program until the N-th breakpoint is coming.\n"
+    "If N is not passed, N is assumed 1.\n"
+  },
+  {
+    "d[elete]", NULL, "Delete some breakpoints",
+    "Usage: delete [bpno1 [bpno2 [... [bpnoN]]]]\n"
+    "\n"
+    "Delete some breakpoints.\n"
+    "Arguments are breakpoint numbers with spaces in between.\n"
+    "To delete all breakpoints, give no argument.\n"
+  },
+  {
+    "dis[able]", NULL, "Disable some breakpoints",
+    "Usage: disable [bpno1 [bpno2 [... [bpnoN]]]]\n"
+    "\n"
+    "Disable some breakpoints.\n"
+    "Arguments are breakpoint numbers with spaces in between.\n"
+    "To disable all breakpoints, give no argument.\n"
+  },
+  {
+    "en[able]", NULL, "Enable some breakpoints",
+    "Usage: enable [bpno1 [bpno2 [... [bpnoN]]]]\n"
+    "\n"
+    "Enable some breakpoints.\n"
+    "Arguments are breakpoint numbers with spaces in between.\n"
+    "To enable all breakpoints, give no argument.\n"
+  },
+  {
+    "ev[al]", NULL, "Evaluate expression",
+    "Usage: eval expr\n"
+    "\n"
+    "It evaluates and prints the value of the mruby expression.\n"
+    "This is equivalent to the \'print\' command.\n"
+  },
+  {
+    "h[elp]", NULL, "Print this help",
+    "Usage: help [command]\n"
+    "\n"
+    "With no arguments, help displays a short list of commands.\n"
+    "With a command name as help argument, help displays how to use that command.\n"
+  },
+  {
+    "i[nfo]", "b[reakpoints]", "Status of breakpoints",
+    "Usage: info breakpoints [bpno1 [bpno2 [... [bpnoN]]]]\n"
+    "\n"
+    "Status of specified breakpoints (all user-settable breakpoints if no argument).\n"
+    "Arguments are breakpoint numbers with spaces in between.\n"
+  },
+  {
+    "l[ist]", NULL, "List specified line",
+    "Usage: list\n"
+    "       list first[,last]\n"
+    "       list filename:first[,last]\n"
+    "\n"
+    "Print lines from a source file.\n"
+    "\n"
+    "With first and last, list prints lines from first to last.\n"
+    "When last is empty, it stands for ten lines away from first.\n"
+    "With filename, list prints lines in the specified source file.\n"
+  },
+  {
+    "p[rint]", NULL, "Print value of expression",
+    "Usage: print expr\n"
+    "\n"
+    "It evaluates and prints the value of the mruby expression.\n"
+    "This is equivalent to the \'eval\' command.\n"
+  },
+  {
+    "q[uit]", NULL, "Exit mrdb",
+    "Usage: quit\n"
+    "\n"
+    "Exit mrdb.\n"
+  },
+  {
+    "r[un]", NULL, "Start debugged program",
+    "Usage: run\n"
+    "\n"
+    "Start debugged program.\n"
+  },
+  {
+    "s[tep]", NULL, "Step program until it reaches a different source line",
+    "Usage: step\n"
+    "\n"
+    "Step program until it reaches a different source line.\n"
+  },
+  { NULL, NULL, NULL, NULL }
+};
+
+typedef struct listcmd_parser_state {
+  mrb_bool parse_error;
+  mrb_bool has_line_min;
+  mrb_bool has_line_max;
+  char *filename;
+  uint16_t line_min;
+  uint16_t line_max;
+} listcmd_parser_state;
+
+static listcmd_parser_state*
+listcmd_parser_state_new(mrb_state *mrb)
+{
+  listcmd_parser_state *st = mrb_malloc(mrb, sizeof(listcmd_parser_state));
+  memset(st, 0, sizeof(listcmd_parser_state));
+  return st;
+}
+
+static void
+listcmd_parser_state_free(mrb_state *mrb, listcmd_parser_state *st)
+{
+  if (st != NULL) {
+    if (st->filename != NULL) {
+      mrb_free(mrb, st->filename);
+    }
+    mrb_free(mrb, st);
+  }
+}
+
+static mrb_bool
+parse_uint(char **sp, uint16_t *n)
+{
+  char *p;
+  int i;
+
+  if (*sp == NULL || **sp == '\0') {
+    return FALSE;
+  }
+
+  for (p = *sp; *p != '\0' && ISDIGIT(*p); p++) ;
+
+  if (p != *sp && (i = atoi(*sp)) >= 0) {
+    *n = (uint16_t)i;
+    *sp = p;
+    return TRUE;
+  }
+  return FALSE;
+}
+
+static mrb_bool
+skip_char(char **sp, char c)
+{
+  if (*sp != NULL && **sp == c) {
+    ++*sp;
+    return TRUE;
+  }
+  return FALSE;
+}
+
+static mrb_bool
+parse_lineno(mrb_state *mrb, char **sp, listcmd_parser_state *st)
+{
+  if (*sp == NULL || **sp == '\0') {
+    return FALSE;
+  }
+
+  st->has_line_min = FALSE;
+  st->has_line_max = FALSE;
+
+  if (parse_uint(sp, &st->line_min)) {
+    st->has_line_min = TRUE;
+  }
+  else {
+    return FALSE;
+  }
+
+  if (skip_char(sp, ',')) {
+    if (parse_uint(sp, &st->line_max)) {
+      st->has_line_max = TRUE;
+    }
+    else {
+      st->parse_error = TRUE;
+      return FALSE;
+    }
+  }
+  return TRUE;
+}
+
+static mrb_bool
+parse_filename(mrb_state *mrb, char **sp, listcmd_parser_state *st)
+{
+  char *p;
+  int len;
+
+  if (st->filename != NULL) {
+    mrb_free(mrb, st->filename);
+    st->filename = NULL;
+  }
+
+  if ((p = strchr(*sp, ':')) != NULL) {
+    len = p - *sp;
+  }
+  else {
+    len = strlen(*sp);
+  }
+
+  if (len > 0) {
+    st->filename = mrb_malloc(mrb, len + 1);
+    strncpy(st->filename, *sp, len);
+    st->filename[len] = '\0';
+    *sp += len;
+    return TRUE;
+  }
+  else {
+    return FALSE;
+  }
+}
+
+char*
+replace_ext(mrb_state *mrb, const char *filename, const char *ext)
+{
+  size_t len;
+  char *p, *s;
+
+  if (filename == NULL) {
+    return NULL;
+  }
+
+  if ((p = strrchr(filename, '.')) != NULL && strchr(p, '/') == NULL) {
+    len = p - filename;
+  }
+  else {
+    len = strlen(filename);
+  }
+
+  s = mrb_malloc(mrb, len + strlen(ext) + 1);
+  memset(s, '\0', len + strlen(ext) + 1);
+  strncpy(s, filename, len);
+  strcat(s, ext);
+
+  return s;
+}
+
+static mrb_bool
+parse_listcmd_args(mrb_state *mrb, mrdb_state *mrdb, listcmd_parser_state *st)
+{
+  char *p;
+
+  switch (mrdb->wcnt) {
+  case 2:
+    p = mrdb->words[1];
+
+    /* mrdb->words[1] ::= <lineno> | <filename> ':' <lineno> | <filename> */
+    if (!parse_lineno(mrb, &p, st)) {
+      if (parse_filename(mrb, &p, st)) {
+        if (skip_char(&p, ':')) {
+          if (!parse_lineno(mrb, &p, st)) {
+            st->parse_error = TRUE;
+          }
+        }
+      }
+      else {
+        st->parse_error = TRUE;
+      }
+    }
+    if (*p != '\0') {
+      st->parse_error = TRUE;
+    }
+    break;
+  case 1:
+  case 0:
+    /* do nothing */
+    break;
+  default:
+    st->parse_error = TRUE;
+    printf("too many arguments\n");
+    break;
+  }
+
+  if (!st->parse_error) {
+    if (!st->has_line_min) {
+      st->line_min = (!st->filename && mrdb->dbg->prvline > 0) ? mrdb->dbg->prvline : 1;
+    }
+
+    if (!st->has_line_max) {
+      st->line_max = st->line_min + 9;
+    }
+
+    if (st->filename == NULL) {
+      if (mrdb->dbg->prvfile && strcmp(mrdb->dbg->prvfile, "-")) {
+        st->filename = replace_ext(mrb, mrdb->dbg->prvfile, ".rb");
+      }
+    }
+  }
+
+  if (st->parse_error || st->filename == NULL) {
+    return FALSE;
+  }
+
+  return TRUE;
+}
+
+static mrb_bool
+check_cmd_pattern(const char *pattern, const char *cmd)
+{
+  char *lbracket, *rbracket, *p, *q;
+
+  if (pattern == NULL && cmd == NULL) {
+    return TRUE;
+  }
+  if (pattern == NULL || cmd == NULL) {
+    return FALSE;
+  }
+  if ((lbracket = strchr(pattern, '[')) == NULL) {
+    return !strcmp(pattern, cmd);
+  }
+  if ((rbracket = strchr(pattern, ']')) == NULL) {
+    return FALSE;
+  }
+  if (strncmp(pattern, cmd, lbracket - pattern)) {
+    return FALSE;
+  }
+
+  p = lbracket + 1;
+  q = (char *)cmd + (lbracket - pattern);
+
+  for ( ; p < rbracket && *q != '\0'; p++, q++) {
+    if (*p != *q) {
+      break;
+    }
+  }
+  return *q == '\0';
+}
+
+static help_msg*
+get_help_msg(char *cmd1, char *cmd2)
+{
+  help_msg *p;
+
+  if (cmd1 == NULL) {
+    return NULL;
+  }
+  for (p = help_msg_list; p->cmd1 != NULL; p++) {
+    if (check_cmd_pattern(p->cmd1, cmd1) && check_cmd_pattern(p->cmd2, cmd2)) {
+      return p;
+    }
+  }
+  return NULL;
+}
+
+static mrb_bool
+show_short_help(void)
+{
+  help_msg *p;
+
+  printf("Commands\n");
+
+  for (p = help_msg_list; p->cmd1 != NULL; p++) {
+    if (p->cmd2 == NULL) {
+      printf("  %s -- %s\n", p->cmd1, p->short_msg);
+    }
+    else {
+      printf("  %s %s -- %s\n", p->cmd1, p->cmd2, p->short_msg);
+    }
+  }
+  return TRUE;
+}
+
+static mrb_bool
+show_long_help(char *cmd1, char *cmd2)
+{
+  help_msg *help;
+
+  if ((help = get_help_msg(cmd1, cmd2)) == NULL) {
+    return FALSE;
+  }
+  printf("%s", help->long_msg);
+  return TRUE;
+}
+
+dbgcmd_state
+dbgcmd_list(mrb_state *mrb, mrdb_state *mrdb)
+{
+  char *filename;
+  listcmd_parser_state *st = listcmd_parser_state_new(mrb);
+
+  if (parse_listcmd_args(mrb, mrdb, st)) {
+    if ((filename = mrb_debug_get_source(mrb, mrdb, mrdb->srcpath, st->filename)) == NULL) {
+      filename = st->filename;
+    }
+    mrb_debug_list(mrb, mrdb->dbg, filename, st->line_min, st->line_max);
+
+    if (filename != NULL && filename != st->filename) {
+      mrb_free(mrb, filename);
+    }
+    listcmd_parser_state_free(mrb, st);
+  }
+
+  return DBGST_PROMPT;
+}
+
+dbgcmd_state
+dbgcmd_help(mrb_state *mrb, mrdb_state *mrdb)
+{
+  mrb_bool is_valid;
+  int i;
+
+  switch (mrdb->wcnt) {
+  case 0:
+  case 1:
+    is_valid = show_short_help();
+    break;
+  case 2:
+    is_valid = show_long_help(mrdb->words[1], NULL);
+    break;
+  case 3:
+    is_valid = show_long_help(mrdb->words[1], mrdb->words[2]);
+    break;
+  default:
+    is_valid = FALSE;
+    break;
+  }
+
+  if (!is_valid) {
+    printf("Invalid command \"");
+    for (i = 1; i < mrdb->wcnt; i++) {
+      printf("%s%s", i == 1 ? "" : " ", mrdb->words[i]);
+    }
+    printf("\". Try \"help\".\n");
+  }
+
+  return DBGST_PROMPT;
+}
+
+dbgcmd_state
+dbgcmd_quit(mrb_state *mrb, mrdb_state *mrdb)
+{
+  switch (mrdb->dbg->xm) {
+  case DBG_RUN:
+  case DBG_STEP:
+  case DBG_NEXT:
+    while (1) {
+      char c;
+      int buf;
+
+      printf("The program is running.  Exit anyway? (y or n) ");
+      fflush(stdout);
+
+      if ((buf = getchar()) == EOF) {
+        mrdb->dbg->xm = DBG_QUIT;
+        break;
+      }
+      c = buf;
+      while (buf != '\n' && (buf = getchar()) != EOF) ;
+
+      if (c == 'y' || c == 'Y') {
+        mrdb->dbg->xm = DBG_QUIT;
+        break;
+      }
+      else if (c == 'n' || c == 'N') {
+        break;
+      }
+      else {
+        printf("Please answer y or n.\n");
+      }
+    }
+    break;
+  default:
+    mrdb->dbg->xm = DBG_QUIT;
+    break;
+  }
+
+  if (mrdb->dbg->xm == DBG_QUIT) {
+    struct RClass *exc;
+    exc = mrb_define_class(mrb, "DebuggerExit", mrb_class_get(mrb, "Exception"));
+    mrb_raise(mrb, exc, "Exit mrdb.");
+  }
+  return DBGST_PROMPT;
+}