1 files changed, 209 insertions, 0 deletions
diff --git a/v_windows/v/cmd/tools/vbug.v b/v_windows/v/cmd/tools/vbug.v
new file mode 100644
index 0000000..67fc186
--- /dev/null
+++ b/v_windows/v/cmd/tools/vbug.v
@@ -0,0 +1,209 @@
+import dl
+import net.urllib
+import os
+import readline
+
+const vroot = @VMODROOT
+
+// get output from `v doctor`
+fn get_vdoctor_output(is_verbose bool) string {
+	vexe := os.getenv('VEXE')
+	verbose_flag := if is_verbose { '-v' } else { '' }
+	result := os.execute('$vexe $verbose_flag doctor')
+	if result.exit_code != 0 {
+		eprintln('unable to get `v doctor` output: $result.output')
+		return ''
+	}
+	return result.output
+}
+
+// get ouput from `v -g -o vdbg cmd/v && vdbg file.v`
+fn get_v_build_output(is_verbose bool, is_yes bool, file_path string) string {
+	mut vexe := os.getenv('VEXE')
+	// prepare a V compiler with -g to have better backtraces if possible
+	wd := os.getwd()
+	os.chdir(vroot) or {}
+	verbose_flag := if is_verbose { '-v' } else { '' }
+	vdbg_path := $if windows { '$vroot/vdbg.exe' } $else { '$vroot/vdbg' }
+	vdbg_compilation_cmd := '"$vexe" $verbose_flag -g -o "$vdbg_path" cmd/v'
+	vdbg_result := os.execute(vdbg_compilation_cmd)
+	os.chdir(wd) or {}
+	if vdbg_result.exit_code == 0 {
+		vexe = vdbg_path
+	} else {
+		eprintln('unable to compile V in debug mode: $vdbg_result.output\ncommand: $vdbg_compilation_cmd\n')
+	}
+	//
+	mut result := os.execute('"$vexe" $verbose_flag "$file_path"')
+	defer {
+		os.rm(vdbg_path) or {
+			if is_verbose {
+				eprintln('unable to delete `vdbg`: $err')
+			}
+		}
+	}
+	if result.exit_code == 0 {
+		defer {
+			mut generated_file := file_path.all_before_last('.')
+			$if windows {
+				generated_file += '.exe'
+			}
+			os.rm(generated_file) or {
+				if is_verbose {
+					eprintln('unable to delete generated file: $err')
+				}
+			}
+		}
+		run := is_yes
+			|| ask('It looks like the compilation went well, do you want to run the file?')
+		if run {
+			result = os.execute('"$vexe" $verbose_flag run "$file_path"')
+			if result.exit_code == 0 && !is_yes {
+				confirm_or_exit('It looks like the file ran correctly as well, are you sure you want to continue?')
+			}
+		}
+	}
+	return result.output
+}
+
+type ShellExecuteWin = fn (voidptr, &u16, &u16, &u16, &u16, int)
+
+// open a uri using the default associated application
+fn open_browser(uri string) ? {
+	$if macos {
+		result := os.execute('open "$uri"')
+		if result.exit_code != 0 {
+			return error('unable to open url: $result.output')
+		}
+	} $else $if freebsd || openbsd {
+		result := os.execute('xdg-open "$uri"')
+		if result.exit_code != 0 {
+			return error('unable to open url: $result.output')
+		}
+	} $else $if linux {
+		providers := ['xdg-open', 'x-www-browser', 'www-browser', 'wslview']
+
+		// There are multiple possible providers to open a browser on linux
+		// One of them is xdg-open, another is x-www-browser, then there's www-browser, etc.
+		// Look for one that exists and run it
+		for provider in providers {
+			if os.exists_in_system_path(provider) {
+				result := os.execute('$provider "$uri"')
+				if result.exit_code != 0 {
+					return error('unable to open url: $result.output')
+				}
+				break
+			}
+		}
+	} $else $if windows {
+		handle := dl.open_opt('shell32', dl.rtld_now) ?
+		// https://docs.microsoft.com/en-us/windows/win32/api/shellapi/nf-shellapi-shellexecutew
+		func := ShellExecuteWin(dl.sym_opt(handle, 'ShellExecuteW') ?)
+		func(C.NULL, 'open'.to_wide(), uri.to_wide(), C.NULL, C.NULL, C.SW_SHOWNORMAL)
+		dl.close(handle)
+	} $else {
+		return error('unsupported platform')
+	}
+}
+
+fn ask(msg string) bool {
+	prompt := os.input_opt('$msg [Y/n] ') or { 'y' }
+	return prompt == '' || prompt[0].ascii_str().to_lower() != 'n'
+}
+
+fn confirm_or_exit(msg string) {
+	if !ask(msg) {
+		exit(1)
+	}
+}
+
+fn main() {
+	mut file_path := ''
+	mut is_verbose := false
+	mut is_yes := false
+	for arg in os.args[2..] {
+		match arg {
+			'-v' {
+				is_verbose = true
+			}
+			'-y' {
+				is_yes = true
+			}
+			else {
+				if !arg.ends_with('.v') && !arg.ends_with('.vsh') && !arg.ends_with('.vv') {
+					eprintln('unknown argument: `$arg`')
+					exit(1)
+				}
+				if file_path != '' {
+					eprintln('only one V file can be submitted')
+					exit(1)
+				}
+				file_path = arg
+			}
+		}
+	}
+	if file_path == '' {
+		eprintln('v bug: no v file listed to report')
+		exit(1)
+	}
+	// collect error information
+	// output from `v doctor`
+	vdoctor_output := get_vdoctor_output(is_verbose)
+	// file content
+	file_content := os.read_file(file_path) or {
+		eprintln('unable to get file "$file_path" content: $err')
+		''
+	}
+	// output from `v -g -o vdbg cmd/v && vdbg file.v`
+	build_output := get_v_build_output(is_verbose, is_yes, file_path)
+	// ask the user if he wants to submit even after an error
+	if !is_yes && (vdoctor_output == '' || file_content == '' || build_output == '') {
+		confirm_or_exit('An error occured retrieving the information, do you want to continue?')
+	}
+
+	expected_result := readline.read_line('What did you expect to see? ') or {
+		// Ctrl-C was pressed
+		eprintln('\nCanceled')
+		exit(1)
+	}
+	// open prefilled issue creation page, or print link as a fallback
+
+	if !is_yes && vdoctor_output.contains('behind V master') {
+		confirm_or_exit('It looks like your installation of V is outdated, we advise you to run `v up` before submitting an issue. Are you sure you want to continue?')
+	}
+
+	// When updating this template, make sure to update `.github/ISSUE_TEMPLATE/bug_report.md` too
+	raw_body := '<!-- It is advisable to update all relevant modules using `v outdated` and `v install` -->
+**V doctor:**
+```
+$vdoctor_output
+```
+
+**What did you do?**
+`v -g -o vdbg cmd/v && vdbg $file_path`
+{file_content}
+
+**What did you expect to see?**
+
+$expected_result
+
+**What did you see instead?**
+```
+$build_output```'
+	mut encoded_body := urllib.query_escape(raw_body.replace_once('{file_content}', '```v\n$file_content\n```'))
+	mut generated_uri := 'https://github.com/vlang/v/issues/new?labels=Bug&body=$encoded_body'
+	if generated_uri.len > 8192 {
+		// GitHub doesn't support URLs longer than 8192 characters
+		encoded_body = urllib.query_escape(raw_body.replace_once('{file_content}', 'See attached file `$file_path`'))
+		generated_uri = 'https://github.com/vlang/v/issues/new?labels=Bug&body=$encoded_body'
+		println('Your file is too big to be submitted. Head over to the following URL and attach your file.')
+		println(generated_uri)
+	} else {
+		open_browser(generated_uri) or {
+			if is_verbose {
+				eprintln(err)
+			}
+			println(generated_uri)
+		}
+	}
+}