diff options
Diffstat (limited to 'toys/toysh.c')
| -rw-r--r-- | toys/toysh.c | 152 |
1 files changed, 149 insertions, 3 deletions
diff --git a/toys/toysh.c b/toys/toysh.c index 61df13d..353d215 100644 --- a/toys/toysh.c +++ b/toys/toysh.c @@ -13,9 +13,155 @@ * http://www.opengroup.org/onlinepubs/009695399/utilities/exit.html * * Things like the bash man page are good to read too. - */ - -// Handle embedded NUL bytes in the command line. + * + * TODO: // Handle embedded NUL bytes in the command line. + +config TOYSH + bool "sh (toysh)" + default y + help + usage: sh [-c command] [script] + + The toybox command shell. Runs a shell script, or else reads input + interactively and responds to it. + + -c command line to execute + +config TOYSH_TTY + bool "Interactive shell (terminal control)" + default n + depends on TOYSH + help + Add terminal control to toysh. This is necessary for interactive use, + so the shell isn't killed by CTRL-C. + +config TOYSH_PROFILE + bool "Profile support" + default n + depends on TOYSH_TTY + help + Read /etc/profile and ~/.profile when running interactively. + + Also enables the built-in command "source". + +config TOYSH_JOBCTL + bool "Job Control (fg, bg, jobs)" + default n + depends on TOYSH_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 TOYSH_FLOWCTL + bool "Flow control (if, while, for, functions)" + default n + depends on TOYSH + 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 TOYSH_QUOTES + bool "Smarter argument parsing (quotes)" + default n + depends on TOYSH + help + Add support for parsing "" and '' style quotes to the toysh command + parser, with lets arguments have spaces in them. + +config TOYSH_WILDCARDS + bool "Wildcards ( ?*{,} )" + default n + depends on TOYSH_QUOTES + help + Expand wildcards in argument names, ala "ls -l *.t?z" and + "rm subdir/{one,two,three}.txt". + +config TOYSH_PROCARGS + bool "Executable arguments ( `` and $() )" + default n + depends on TOYSH_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 TOYSH_ENVVARS + bool "Environment variable support" + default n + depends on TOYSH_QUOTES + help + Substitute environment variable values for $VARNAME or ${VARNAME}, + and enable the built-in command "export". + +config TOYSH_LOCALS + bool "Local variables" + default n + depends on TOYSH_ENVVARS + help + Support for local variables, fancy prompts ($PS1), the "set" command, + and $?. + +config TOYSH_ARRAYS + bool "Array variables" + default n + depends on TOYSH_LOCALS + help + Support for ${blah[blah]} style array variables. + +config TOYSH_PIPES + bool "Pipes and redirects ( | > >> < << & && | || () ; )" + default n + depends on TOYSH + 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 TOYSH_BUILTINS + bool "Builtin commands" + default n + depends on TOYSH + help + Adds the commands exec, fg, bg, help, jobs, pwd, export, source, set, + unset, read, alias. + +config EXIT + bool + default n + depends on TOYSH + 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 TOYSH + 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 TOYSH + help + usage: cd [-PL] + + -P Physical path: resolve symlinks in path. + -L Cancel previous -P and restore default behavior. +*/ #include "toys.h" |