Move some unfinished commands to the "pending" directory.

1 files changed, 0 insertions, 392 deletions

diff --git a/toys/posix/sh.c b/toys/posix/sh.c
deleted file mode 100644
index 2f09f63b..00000000
--- a/toys/posix/sh.c
+++ /dev/null
@@ -1,392 +0,0 @@
-/* sh.c - toybox shell
- *
- * Copyright 2006 Rob Landley <rob@landley.net>
- *
- * The POSIX-2008/SUSv4 spec for this is at:
- * http://opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html
- * and http://opengroup.org/onlinepubs/9699919799/utilities/sh.html
- *
- * The first link describes the following shell builtins:
- *
- *   break colon continue dot eval exec exit export readonly return set shift
- *   times trap unset
- *
- * The second link (the utilities directory) also contains specs for the
- * following shell builtins:
- *
- *   alias bg cd command fc fg getopts hash jobs kill read type ulimit
- *   umask unalias wait
- *
- * Things like the bash man page are good to read too.
- *
- * TODO: // Handle embedded NUL bytes in the command line.
-
-USE_SH(NEWTOY(cd, NULL, TOYFLAG_NOFORK))
-USE_SH(NEWTOY(exit, NULL, TOYFLAG_NOFORK))
-
-USE_SH(NEWTOY(sh, "c:i", TOYFLAG_BIN))
-USE_SH(OLDTOY(toysh, sh, "c:i", TOYFLAG_BIN))
-
-config SH
-  bool "sh (toysh)"
-  default n
-  help
-    usage: sh [-c command] [script]
-
-    Command shell.  Runs a shell script, or reads input interactively
-    and responds to it.
-
-    -c	command line to execute
-
-config SH_TTY
-  bool "Interactive shell (terminal control)"
-  default n
-  depends on SH
-  help
-    Add terminal control to toysh.  This is necessary for interactive use,
-    so the shell isn't killed by CTRL-C.
-
-config SH_PROFILE
-  bool "Profile support"
-  default n
-  depends on SH_TTY
-  help
-    Read /etc/profile and ~/.profile when running interactively.
-
-    Also enables the built-in command "source".
-
-config SH_JOBCTL
-  bool "Job Control (fg, bg, jobs)"
-  default n
-  depends on SH_TTY
-  help
-    Add job control to toysh.  This lets toysh handle CTRL-Z, and enables
-    the built-in commands "fg", "bg", and "jobs".
-
-    With pipe support, enable use of "&" to run background processes.
-
-config SH_FLOWCTL
-  bool "Flow control (if, while, for, functions)"
-  default n
-  depends on SH
-  help
-    Add flow control to toysh.  This enables the if/then/else/fi,
-    while/do/done, and for/do/done constructs.
-
-    With pipe support, this enables the ability to define functions
-    using the "function name" or "name()" syntax, plus curly brackets
-    "{ }" to group commands.
-
-config SH_QUOTES
-  bool "Smarter argument parsing (quotes)"
-  default n
-  depends on SH
-  help
-    Add support for parsing "" and '' style quotes to the toysh command
-    parser, with lets arguments have spaces in them.
-
-config SH_WILDCARDS
-  bool "Wildcards ( ?*{,} )"
-  default n
-  depends on SH_QUOTES
-  help
-    Expand wildcards in argument names, ala "ls -l *.t?z" and
-    "rm subdir/{one,two,three}.txt".
-
-config SH_PROCARGS
-  bool "Executable arguments ( `` and $() )"
-  default n
-  depends on SH_QUOTES
-  help
-    Add support for executing arguments contianing $() and ``, using
-    the output of the command as the new argument value(s).
-
-    (Bash calls this "command substitution".)
-
-config SH_ENVVARS
-  bool "Environment variable support"
-  default n
-  depends on SH_QUOTES
-  help
-    Substitute environment variable values for $VARNAME or ${VARNAME},
-    and enable the built-in command "export".
-
-config SH_LOCALS
-  bool "Local variables"
-  default n
-  depends on SH_ENVVARS
-  help
-    Support for local variables, fancy prompts ($PS1), the "set" command,
-    and $?.
-
-config SH_ARRAYS
-  bool "Array variables"
-  default n
-  depends on SH_LOCALS
-  help
-    Support for ${blah[blah]} style array variables.
-
-config SH_PIPES
-  bool "Pipes and redirects ( | > >> < << & && | || () ; )"
-  default n
-  depends on SH
-  help
-    Support multiple commands on the same command line.  This includes
-    | pipes, > >> < redirects, << here documents, || && conditional
-    execution, () subshells, ; sequential execution, and (with job
-    control) & background processes.
-
-config SH_BUILTINS
-  bool "Builtin commands"
-  default n
-  depends on SH
-  help
-    Adds the commands exec, fg, bg, help, jobs, pwd, export, source, set,
-    unset, read, alias.
-
-config EXIT
-  bool
-  default n
-  depends on SH
-  help
-    usage: exit [status]
-
-    Exit shell.  If no return value supplied on command line, use value
-    of most recent command, or 0 if none.
-
-config CD
-  bool
-  default n
-  depends on SH
-  help
-    usage: cd [path]
-
-    Change current directory.  With no arguments, go to $HOME.
-
-config CD_P
-  bool # "-P support for cd"
-  default n
-  depends on SH
-  help
-    usage: cd [-PL]
-
-    -P    Physical path: resolve symlinks in path.
-    -L    Cancel previous -P and restore default behavior.
-*/
-
-#define FOR_sh
-#include "toys.h"
-
-GLOBALS(
-  char *command;
-)
-
-// A single executable, its arguments, and other information we know about it.
-#define SH_FLAG_EXIT    1
-#define SH_FLAG_SUSPEND 2
-#define SH_FLAG_PIPE    4
-#define SH_FLAG_AND     8
-#define SH_FLAG_OR      16
-#define SH_FLAG_AMP     32
-#define SH_FLAG_SEMI    64
-#define SH_FLAG_PAREN   128
-
-// What we know about a single process.
-struct command {
-  struct command *next;
-  int flags;              // exit, suspend, && ||
-  int pid;                // pid (or exit code)
-  int argc;
-  char *argv[0];
-};
-
-// A collection of processes piped into/waiting on each other.
-struct pipeline {
-  struct pipeline *next;
-  int job_id;
-  struct command *cmd;
-  char *cmdline;         // Unparsed line for display purposes
-  int cmdlinelen;        // How long is cmdline?
-};
-
-// Parse one word from the command line, appending one or more argv[] entries
-// to struct command.  Handles environment variable substitution and
-// substrings.  Returns pointer to next used byte, or NULL if it
-// hit an ending token.
-static char *parse_word(char *start, struct command **cmd)
-{
-  char *end;
-
-  // Detect end of line (and truncate line at comment)
-  if (CFG_SH_PIPES && strchr("><&|(;", *start)) return 0;
-
-  // Grab next word.  (Add dequote and envvar logic here)
-  end = start;
-  while (*end && !isspace(*end)) end++;
-  (*cmd)->argv[(*cmd)->argc++] = xstrndup(start, end-start);
-
-  // Allocate more space if there's no room for NULL terminator.
-
-  if (!((*cmd)->argc & 7))
-    *cmd=xrealloc(*cmd,
-        sizeof(struct command) + ((*cmd)->argc+8)*sizeof(char *));
-  (*cmd)->argv[(*cmd)->argc] = 0;
-  return end;
-}
-
-// Parse a line of text into a pipeline.
-// Returns a pointer to the next line.
-
-static char *parse_pipeline(char *cmdline, struct pipeline *line)
-{
-  struct command **cmd = &(line->cmd);
-  char *start = line->cmdline = cmdline;
-
-  if (!cmdline) return 0;
-
-  if (CFG_SH_JOBCTL) line->cmdline = cmdline;
-
-  // Parse command into argv[]
-  for (;;) {
-    char *end;
-
-    // Skip leading whitespace and detect end of line.
-    while (isspace(*start)) start++;
-    if (!*start || *start=='#') {
-      if (CFG_SH_JOBCTL) line->cmdlinelen = start-cmdline;
-      return 0;
-    }
-
-    // Allocate next command structure if necessary
-    if (!*cmd) *cmd = xzalloc(sizeof(struct command)+8*sizeof(char *));
-
-    // Parse next argument and add the results to argv[]
-    end = parse_word(start, cmd);
-
-    // If we hit the end of this command, how did it end?
-    if (!end) {
-      if (CFG_SH_PIPES && *start) {
-        if (*start==';') {
-          start++;
-          break;
-        }
-        // handle | & < > >> << || &&
-      }
-      break;
-    }
-    start = end;
-  }
-
-  if (CFG_SH_JOBCTL) line->cmdlinelen = start-cmdline;
-
-  return start;
-}
-
-// Execute the commands in a pipeline
-static void run_pipeline(struct pipeline *line)
-{
-  struct toy_list *tl;
-  struct command *cmd = line->cmd;
-  if (!cmd || !cmd->argc) return;
-
-  tl = toy_find(cmd->argv[0]);
-  // Is this command a builtin that should run in this process?
-  if (tl && (tl->flags & TOYFLAG_NOFORK)) {
-    struct toy_context temp;
-    jmp_buf rebound;
-
-    // This fakes lots of what toybox_main() does.
-    memcpy(&temp, &toys, sizeof(struct toy_context));
-    memset(&toys, 0, sizeof(struct toy_context));
-
-    if (!setjmp(rebound)) {
-      toys.rebound = rebound;
-      toy_init(tl, cmd->argv);
-      tl->toy_main();
-    }
-    cmd->pid = toys.exitval;
-    if (toys.optargs != toys.argv+1) free(toys.optargs);
-    if (toys.old_umask) umask(toys.old_umask);
-    memcpy(&toys, &temp, sizeof(struct toy_context));
-  } else {
-    int status;
-
-    cmd->pid = vfork();
-    if (!cmd->pid) xexec(cmd->argv);
-    else waitpid(cmd->pid, &status, 0);
-
-    if (CFG_SH_FLOWCTL || CFG_SH_PIPES) {
-      if (WIFEXITED(status)) cmd->pid = WEXITSTATUS(status);
-      if (WIFSIGNALED(status)) cmd->pid = WTERMSIG(status);
-    }
-  }
-
-  return;
-}
-
-// Free the contents of a command structure
-static void free_cmd(void *data)
-{
-  struct command *cmd=(struct command *)data;
-
-  while(cmd->argc) free(cmd->argv[--cmd->argc]);
-}
-
-
-// Parse a command line and do what it says to do.
-static void handle(char *command)
-{
-  struct pipeline line;
-  char *start = command;
-
-  // Loop through commands in this line
-
-  for (;;) {
-
-    // Parse a group of connected commands
-
-    memset(&line,0,sizeof(struct pipeline));
-    start = parse_pipeline(start, &line);
-    if (!line.cmd) break;
-
-    // Run those commands
-
-    run_pipeline(&line);
-    llist_traverse(line.cmd, free_cmd);
-  }
-}
-
-void cd_main(void)
-{
-  char *dest = *toys.optargs ? *toys.optargs : getenv("HOME");
-  xchdir(dest);
-}
-
-void exit_main(void)
-{
-  exit(*toys.optargs ? atoi(*toys.optargs) : 0);
-}
-
-void sh_main(void)
-{
-  FILE *f;
-
-  // Set up signal handlers and grab control of this tty.
-  if (CFG_SH_TTY) {
-    if (isatty(0)) toys.optflags |= 1;
-  }
-  f = *toys.optargs ? xfopen(*toys.optargs, "r") : NULL;
-  if (TT.command) handle(TT.command);
-  else {
-    size_t cmdlen = 0;
-    for (;;) {
-      char *command = 0;
-      if (!f) xputc('$');
-      if (1 > getline(&command, &cmdlen, f ? f : stdin)) break;
-      handle(command);
-      free(command);
-    }
-  }
-
-  toys.exitval = 1;
-}