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Using readable_debug_backtrace (provided by pointybeard/helpers-functions-debug) to produce a trace if one is provided

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Alannah Kearney 2019-05-26 20:19:25 +10:00
commit 558ea1ba2c
1 changed files with 22 additions and 36 deletions
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58
src/Cli/Cli.php
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@ -9,6 +9,7 @@ use pointybeard\Helpers\Cli\Colour;
use pointybeard\Helpers\Functions\Flags;
use pointybeard\Helpers\Functions\Strings;
use pointybeard\Helpers\Functions\Arrays;
use pointybeard\Helpers\Functions\Debug;
/*
* Checks if bash can be invoked.
@ -139,7 +140,7 @@ if (!function_exists(__NAMESPACE__.'manpage')) {
}
if (!function_exists(__NAMESPACE__."\display_error_and_exit")) {
function display_error_and_exit($message, $heading = 'Error', $background = Colour\Colour::BG_RED): void
function display_error_and_exit($message, $heading = 'Error', $background = Colour\Colour::BG_RED, ?array $trace = null): void
{
$padCharacter = ' ';
$paddingBufferSize = 0.15; // 15%
@ -147,17 +148,7 @@ if (!function_exists(__NAMESPACE__."\display_error_and_exit")) {
$edgePaddingLength = 5;
$edgePadding = str_repeat($padCharacter, $edgePaddingLength);
// Get the window dimensions but restrict width to minimum
// of $minimumWindowWidth
$window = get_window_size();
$window['cols'] = max($minimumWindowWidth, $window['cols']);
// This shrinks the total line length (derived by the window width) by
// $paddingBufferSize
$paddingBuffer = (int) ceil($window['cols'] * $paddingBufferSize);
$lineLength = $window['cols'] - (2 * $edgePaddingLength) - $paddingBuffer;
// Convenience function for adding the background to a line.
$add_background = function (string $string, bool $bold = false) use ($padCharacter, $edgePadding, $background): string {
$string = $edgePadding.$string.$edgePadding;
@ -172,6 +163,17 @@ if (!function_exists(__NAMESPACE__."\display_error_and_exit")) {
);
};
// Get the window dimensions but restrict width to minimum
// of $minimumWindowWidth
$window = get_window_size();
$window['cols'] = max($minimumWindowWidth, $window['cols']);
// This shrinks the total line length (derived by the window width) by
// $paddingBufferSize
$paddingBuffer = (int) ceil($window['cols'] * $paddingBufferSize);
$lineLength = $window['cols'] - (2 * $edgePaddingLength) - $paddingBuffer;
$emptyLine = $add_background(str_repeat($padCharacter, $lineLength), true);
$heading = Strings\mb_str_pad(trim($heading), $lineLength, $padCharacter, \STR_PAD_RIGHT);
@ -186,20 +188,8 @@ if (!function_exists(__NAMESPACE__."\display_error_and_exit")) {
// Reset array indicies
$message = array_values($message);
// Check for a backtrace and get it's index if there is one. Trace
// will most likely have been provided by the
// Helpers\Exceptions\ReadableTrace\ReadableTraceException
$traceArrayIndex = array_search('Trace', $message);
if (false !== $traceArrayIndex) {
// Purely cosmetic; add a new line before the trace starts
$message[$traceArrayIndex] = PHP_EOL.$message[$traceArrayIndex];
}
// Wrap everything (except the trace) in red
// Wrap everything in red
for ($ii = 0; $ii < count($message); ++$ii) {
if (false !== $traceArrayIndex && $ii == $traceArrayIndex) {
break;
}
$message[$ii] = $add_background(Strings\mb_str_pad(
$message[$ii],
mb_strlen($heading),
@ -208,22 +198,18 @@ if (!function_exists(__NAMESPACE__."\display_error_and_exit")) {
));
}
// Add an empty red line before the trace (or at the end if there
// is no trace)
Arrays\array_insert_at_index(
$message,
false !== $traceArrayIndex
? $traceArrayIndex
: count($message),
$emptyLine
);
// Add an empty red line at the end
array_push($message, $emptyLine);
// Print the error message, starting with an empty red line
printf(
"\r\n%s\r\n%s\r\n%s\r\n",
"\r\n%s\r\n%s\r\n%s\r\n%s",
$emptyLine,
$add_background($heading, true),
implode($message, PHP_EOL)
implode($message, PHP_EOL),
!empty($trace) && count($trace) > 0
? PHP_EOL . sprintf("Trace\r\n==========\r\n%s\r\n", Debug\readable_debug_backtrace($trace))
: ''
);
exit(1);