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Remove C++ version of builtin functions

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And the C++ reformat_for_screen and event_filter_names as there are no more users.
This commit is contained in:
Fabian Boehm 2023-08-11 15:18:03 +02:00
parent 6489ef5ac0
commit 5f0df359b8
7 changed files with 1 additions and 480 deletions
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2
CMakeLists.txt
View file

@ -103,7 +103,7 @@ set(FISH_BUILTIN_SRCS
src/builtins/commandline.cpp src/builtins/complete.cpp
src/builtins/disown.cpp
src/builtins/eval.cpp src/builtins/fg.cpp
src/builtins/functions.cpp src/builtins/history.cpp
src/builtins/history.cpp
src/builtins/jobs.cpp
src/builtins/read.cpp src/builtins/set.cpp
src/builtins/source.cpp

1
src/builtin.cpp
View file

@ -35,7 +35,6 @@
#include "builtins/disown.h"
#include "builtins/eval.h"
#include "builtins/fg.h"
#include "builtins/functions.h"
#include "builtins/history.h"
#include "builtins/jobs.h"
#include "builtins/read.h"

398
src/builtins/functions.cpp
View file

@ -1,398 +0,0 @@
// Implementation of the functions builtin.
#include "config.h" // IWYU pragma: keep
#include "functions.h"
#include <unistd.h>
#include <algorithm>
#include <memory>
#include <string>
#include <vector>
#include "../builtin.h"
#include "../common.h"
#include "../env.h"
#include "../event.h"
#include "../fallback.h" // IWYU pragma: keep
#include "../function.h"
#include "../highlight.h"
#include "../io.h"
#include "../maybe.h"
#include "../parser.h"
#include "../parser_keywords.h"
#include "../termsize.h"
#include "../wgetopt.h"
#include "../wutil.h" // IWYU pragma: keep
struct functions_cmd_opts_t {
bool print_help = false;
bool erase = false;
bool list = false;
bool show_hidden = false;
bool query = false;
bool copy = false;
bool report_metadata = false;
bool no_metadata = false;
bool verbose = false;
bool handlers = false;
const wchar_t *handlers_type = nullptr;
const wchar_t *description = nullptr;
};
static const wchar_t *const short_options = L":Ht:Dacd:ehnqv";
static const struct woption long_options[] = {{L"erase", no_argument, 'e'},
{L"description", required_argument, 'd'},
{L"names", no_argument, 'n'},
{L"all", no_argument, 'a'},
{L"help", no_argument, 'h'},
{L"query", no_argument, 'q'},
{L"copy", no_argument, 'c'},
{L"details", no_argument, 'D'},
{L"no-details", no_argument, 1},
{L"verbose", no_argument, 'v'},
{L"handlers", no_argument, 'H'},
{L"handlers-type", required_argument, 't'},
{}};
static int parse_cmd_opts(functions_cmd_opts_t &opts, int *optind, //!OCLINT(high ncss method)
int argc, const wchar_t **argv, parser_t &parser, io_streams_t &streams) {
const wchar_t *cmd = argv[0];
int opt;
wgetopter_t w;
while ((opt = w.wgetopt_long(argc, argv, short_options, long_options, nullptr)) != -1) {
switch (opt) {
case 'v': {
opts.verbose = true;
break;
}
case 'e': {
opts.erase = true;
break;
}
case 'D': {
opts.report_metadata = true;
break;
}
case 1: {
opts.no_metadata = true;
break;
}
case 'd': {
opts.description = w.woptarg;
break;
}
case 'n': {
opts.list = true;
break;
}
case 'a': {
opts.show_hidden = true;
break;
}
case 'h': {
opts.print_help = true;
break;
}
case 'q': {
opts.query = true;
break;
}
case 'c': {
opts.copy = true;
break;
}
case 'H': {
opts.handlers = true;
break;
}
case 't': {
opts.handlers_type = w.woptarg;
opts.handlers = true;
break;
}
case ':': {
builtin_missing_argument(parser, streams, cmd, argv[w.woptind - 1]);
return STATUS_INVALID_ARGS;
}
case '?': {
builtin_unknown_option(parser, streams, cmd, argv[w.woptind - 1]);
return STATUS_INVALID_ARGS;
}
default: {
DIE("unexpected retval from wgetopt_long");
}
}
}
*optind = w.woptind;
return STATUS_CMD_OK;
}
static int report_function_metadata(const wcstring &funcname, bool verbose, io_streams_t &streams,
parser_t &parser, bool metadata_as_comments) {
wcstring path = L"n/a";
const wchar_t *autoloaded = L"n/a";
const wchar_t *shadows_scope = L"n/a";
wcstring description = L"n/a";
int line_number = 0;
bool is_copy = false;
wcstring copy_path = L"n/a";
int copy_line_number = 0;
if (auto mprops = function_get_props_autoload(funcname, parser)) {
const auto &props = *mprops;
if (auto def_file = props->definition_file()) {
path = std::move(*def_file);
autoloaded = props->is_autoload() ? L"autoloaded" : L"not-autoloaded";
line_number = props->definition_lineno();
} else {
path = L"stdin";
}
is_copy = props->is_copy();
auto definition_file = props->copy_definition_file();
if (definition_file) {
copy_path = *definition_file;
copy_line_number = props->copy_definition_lineno();
} else {
copy_path = L"stdin";
}
shadows_scope = props->shadow_scope() ? L"scope-shadowing" : L"no-scope-shadowing";
description =
escape_string(*props->get_description(), ESCAPE_NO_PRINTABLES | ESCAPE_NO_QUOTED);
}
if (metadata_as_comments) {
// "stdin" means it was defined interactively, "-" means it was defined via `source`.
// Neither is useful information.
wcstring comment;
if (path == L"stdin") {
append_format(comment, L"# Defined interactively");
} else if (path == L"-") {
append_format(comment, L"# Defined via `source`");
} else {
append_format(comment, L"# Defined in %ls @ line %d", path.c_str(), line_number);
}
if (is_copy) {
if (copy_path == L"stdin") {
append_format(comment, L", copied interactively\n");
} else if (copy_path == L"-") {
append_format(comment, L", copied via `source`\n");
} else {
append_format(comment, L", copied in %ls @ line %d\n", copy_path.c_str(),
copy_line_number);
}
} else {
append_format(comment, L"\n");
}
if (!streams.out_is_redirected && isatty(STDOUT_FILENO)) {
std::vector<highlight_spec_t> colors;
highlight_shell(comment, colors, parser.context());
streams.out.append(str2wcstring(colorize(comment, colors, parser.vars())));
} else {
streams.out.append(comment);
}
} else {
streams.out.append_format(L"%ls\n", is_copy ? copy_path.c_str() : path.c_str());
if (verbose) {
streams.out.append_format(L"%ls\n", is_copy ? path.c_str() : autoloaded);
streams.out.append_format(L"%d\n", line_number);
streams.out.append_format(L"%ls\n", shadows_scope);
streams.out.append_format(L"%ls\n", description.c_str());
}
}
return STATUS_CMD_OK;
}
/// \return whether a type filter is valid.
static bool type_filter_valid(const wcstring &filter) {
if (filter.empty()) return true;
for (size_t i = 0; event_filter_names[i]; i++) {
if (filter == event_filter_names[i]) return true;
}
return false;
}
/// The functions builtin, used for listing and erasing functions.
maybe_t<int> builtin_functions(parser_t &parser, io_streams_t &streams, const wchar_t **argv) {
const wchar_t *cmd = argv[0];
int argc = builtin_count_args(argv);
functions_cmd_opts_t opts;
int optind;
int retval = parse_cmd_opts(opts, &optind, argc, argv, parser, streams);
if (retval != STATUS_CMD_OK) return retval;
if (opts.print_help) {
builtin_print_help(parser, streams, cmd);
return STATUS_CMD_OK;
}
// Erase, desc, query, copy and list are mutually exclusive.
bool describe = opts.description != nullptr;
if (describe + opts.erase + opts.list + opts.query + opts.copy > 1) {
streams.err.append_format(BUILTIN_ERR_COMBO, cmd);
builtin_print_error_trailer(parser, streams.err, cmd);
return STATUS_INVALID_ARGS;
}
if (opts.report_metadata && opts.no_metadata) {
streams.err.append_format(BUILTIN_ERR_COMBO, cmd);
builtin_print_error_trailer(parser, streams.err, cmd);
return STATUS_INVALID_ARGS;
}
if (opts.erase) {
for (int i = optind; i < argc; i++) function_remove(argv[i]);
return STATUS_CMD_OK;
}
if (opts.description) {
if (argc - optind != 1) {
streams.err.append_format(_(L"%ls: Expected exactly one function name\n"), cmd);
builtin_print_error_trailer(parser, streams.err, cmd);
return STATUS_INVALID_ARGS;
}
const wchar_t *func = argv[optind];
if (!function_exists(func, parser)) {
streams.err.append_format(_(L"%ls: Function '%ls' does not exist\n"), cmd, func);
builtin_print_error_trailer(parser, streams.err, cmd);
return STATUS_CMD_ERROR;
}
function_set_desc(func, opts.description, parser);
return STATUS_CMD_OK;
}
if (opts.report_metadata) {
if (argc - optind != 1) {
streams.err.append_format(BUILTIN_ERR_ARG_COUNT2, cmd, argv[optind - 1], 1,
argc - optind);
return STATUS_INVALID_ARGS;
}
const wchar_t *funcname = argv[optind];
return report_function_metadata(funcname, opts.verbose, streams, parser, false);
}
if (opts.handlers) {
wcstring type_filter = opts.handlers_type ? opts.handlers_type : L"";
if (!type_filter_valid(type_filter)) {
streams.err.append_format(_(L"%ls: Expected generic | variable | signal | exit | "
L"job-id for --handlers-type\n"),
cmd);
return STATUS_INVALID_ARGS;
}
event_print(streams, type_filter);
return STATUS_CMD_OK;
}
// If we query with no argument, just return false.
if (opts.query && argc == optind) {
return STATUS_CMD_ERROR;
}
if (opts.list || argc == optind) {
wcstring_list_ffi_t names_ffi{};
function_get_names(opts.show_hidden, names_ffi);
std::vector<wcstring> names = std::move(names_ffi.vals);
std::sort(names.begin(), names.end());
bool is_screen = !streams.out_is_redirected && isatty(STDOUT_FILENO);
if (is_screen) {
wcstring buff;
for (const auto &name : names) {
buff.append(name);
buff.append(L", ");
}
if (!names.empty()) {
// Trim trailing ", "
buff.resize(buff.size() - 2, '\0');
}
streams.out.append(reformat_for_screen(buff, termsize_last()));
} else {
for (auto &name : names) {
streams.out.append(name + L"\n");
}
}
return STATUS_CMD_OK;
}
if (opts.copy) {
wcstring current_func;
wcstring new_func;
if (argc - optind != 2) {
streams.err.append_format(_(L"%ls: Expected exactly two names (current function name, "
L"and new function name)\n"),
cmd);
builtin_print_error_trailer(parser, streams.err, cmd);
return STATUS_INVALID_ARGS;
}
current_func = argv[optind];
new_func = argv[optind + 1];
if (!function_exists(current_func, parser)) {
streams.err.append_format(_(L"%ls: Function '%ls' does not exist\n"), cmd,
current_func.c_str());
builtin_print_error_trailer(parser, streams.err, cmd);
return STATUS_CMD_ERROR;
}
if (!valid_func_name(new_func) || parser_keywords_is_reserved(new_func)) {
streams.err.append_format(_(L"%ls: Illegal function name '%ls'\n"), cmd,
new_func.c_str());
builtin_print_error_trailer(parser, streams.err, cmd);
return STATUS_INVALID_ARGS;
}
// Keep things simple: don't allow existing names to be copy targets.
if (function_exists(new_func, parser)) {
streams.err.append_format(
_(L"%ls: Function '%ls' already exists. Cannot create copy '%ls'\n"), cmd,
new_func.c_str(), current_func.c_str());
builtin_print_error_trailer(parser, streams.err, cmd);
return STATUS_CMD_ERROR;
}
if (function_copy(current_func, new_func, parser)) return STATUS_CMD_OK;
return STATUS_CMD_ERROR;
}
int res = STATUS_CMD_OK;
for (int i = optind; i < argc; i++) {
wcstring funcname = argv[i];
auto func = function_get_props_autoload(argv[i], parser);
if (!func) {
res++;
} else {
if (!opts.query) {
if (i != optind) streams.out.append(L"\n");
if (!opts.no_metadata) {
report_function_metadata(funcname, opts.verbose, streams, parser, true);
}
std::unique_ptr<wcstring> def_ptr = (*func)->annotated_definition(funcname);
wcstring def = std::move(*def_ptr);
if (!streams.out_is_redirected && isatty(STDOUT_FILENO)) {
std::vector<highlight_spec_t> colors;
highlight_shell(def, colors, parser.context());
streams.out.append(str2wcstring(colorize(def, colors, parser.vars())));
} else {
streams.out.append(def);
}
}
}
}
return res;
}

11
src/builtins/functions.h
View file

@ -1,11 +0,0 @@
// Prototypes for executing builtin_functions function.
#ifndef FISH_BUILTIN_FUNCTIONS_H
#define FISH_BUILTIN_FUNCTIONS_H
#include "../maybe.h"
class parser_t;
struct io_streams_t;
maybe_t<int> builtin_functions(parser_t &parser, io_streams_t &streams, const wchar_t **argv);
#endif

61
src/common.cpp
View file

@ -657,67 +657,6 @@ void narrow_string_safe(char buff[64], const wchar_t *s) {
buff[idx] = '\0';
}
wcstring reformat_for_screen(const wcstring &msg, const termsize_t &termsize) {
wcstring buff;
int screen_width = termsize.width;
if (screen_width) {
const wchar_t *start = msg.c_str();
const wchar_t *pos = start;
int line_width = 0;
while (true) {
int overflow = 0;
int tok_width = 0;
// Tokenize on whitespace, and also calculate the width of the token.
while (*pos && (!std::wcschr(L" \n\r\t", *pos))) {
// Check is token is wider than one line. If so we mark it as an overflow and break
// the token.
if ((tok_width + fish_wcwidth(*pos)) > (screen_width - 1)) {
overflow = 1;
break;
}
tok_width += fish_wcwidth(*pos);
pos++;
}
// If token is zero character long, we don't do anything.
if (pos == start) {
pos = pos + 1;
} else if (overflow) {
// In case of overflow, we print a newline, except if we already are at position 0.
wcstring token = msg.substr(start - msg.c_str(), pos - start);
if (line_width != 0) buff.push_back(L'\n');
buff.append(format_string(L"%ls-\n", token.c_str()));
line_width = 0;
} else {
// Print the token.
wcstring token = msg.substr(start - msg.c_str(), pos - start);
if ((line_width + (line_width != 0 ? 1 : 0) + tok_width) > screen_width) {
buff.push_back(L'\n');
line_width = 0;
}
buff.append(format_string(L"%ls%ls", line_width ? L" " : L"", token.c_str()));
line_width += (line_width != 0 ? 1 : 0) + tok_width;
}
// Break on end of string.
if (!*pos) {
break;
}
start = pos;
}
} else {
buff.append(msg);
}
buff.push_back(L'\n');
return buff;
}
/// Escape a string in a fashion suitable for using as a URL. Store the result in out_str.
static void escape_string_url(const wcstring &in, wcstring &out) {
auto result = rust_escape_string_url(in.c_str(), in.size());

3
src/common.h
View file

@ -517,9 +517,6 @@ std::unique_ptr<wcstring> unescape_string(const wchar_t *input, size_t len,
std::unique_ptr<wcstring> unescape_string(const wcstring &input, unescape_flags_t escape_special,
escape_string_style_t style = STRING_STYLE_SCRIPT);
/// Write the given paragraph of output, redoing linebreaks to fit \p termsize.
wcstring reformat_for_screen(const wcstring &msg, const termsize_t &termsize);
/// Return the number of seconds from the UNIX epoch, with subsecond precision. This function uses
/// the gettimeofday function and will have the same precision as that function.
using timepoint_t = double;

5
src/event.cpp
View file

@ -28,11 +28,6 @@
#include "wcstringutil.h"
#include "wutil.h" // IWYU pragma: keep
// TODO: Remove after porting functions.cpp to rust
const wchar_t *const event_filter_names[] = {L"signal", L"variable", L"exit",
L"process-exit", L"job-exit", L"caller-exit",
L"generic", nullptr};
void event_fire_generic(parser_t &parser, const wcstring &name, const std::vector<wcstring> &args) {
std::vector<wcharz_t> ffi_args;
for (const auto &arg : args) ffi_args.push_back(arg.c_str());