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[Dotenv] Handle dynamic variables in multiple .env files#48636

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Added dynamic multi .env file config
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@valx76
valx76 committedDec 13, 2022
commite7c9e4a841dfd950683be93eec519b4aa0324fea
86 changes: 70 additions & 16 deletionssrc/Symfony/Component/Dotenv/Dotenv.php
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Original file line numberDiff line numberDiff line change
Expand Up@@ -80,7 +80,13 @@ public function usePutenv(bool $usePutenv = true): static
*/
public function load(string $path, string ...$extraPaths): void
{
$this->doLoad(false, \func_get_args());
$needsAutoValueResolution = 1 === \func_num_args();

$this->doLoad(false, $needsAutoValueResolution, \func_get_args());

if (!$needsAutoValueResolution) {
$this->resolveAllVariables();
}
}

/**
Expand All@@ -99,33 +105,45 @@ public function load(string $path, string ...$extraPaths): void
*/
public function loadEnv(string $path, string $envKey = null, string $defaultEnv = 'dev', array $testEnvs = ['test'], bool $overrideExistingVars = false): void
{
// FIXME - Keep 'false' for loadEnv() or try to know if we will have multiple files to load?
// -> The environment is grabbed on the first doLoad() call so we cannot check conditions (except by loading the files multiple times..)
$needsAutoValueResolution = false;

$k = $envKey ?? $this->envKey;

if (is_file($path) || !is_file($p = "$path.dist")) {
$this->doLoad($overrideExistingVars, [$path]);
$this->doLoad($overrideExistingVars,$needsAutoValueResolution,[$path]);
} else {
$this->doLoad($overrideExistingVars, [$p]);
$this->doLoad($overrideExistingVars,$needsAutoValueResolution,[$p]);
}

if (null === $env = $_SERVER[$k] ?? $_ENV[$k] ?? null) {
$this->populate([$k => $env = $defaultEnv], $overrideExistingVars);
}

if (!\in_array($env, $testEnvs, true) && is_file($p = "$path.local")) {
$this->doLoad($overrideExistingVars, [$p]);
$this->doLoad($overrideExistingVars,$needsAutoValueResolution,[$p]);
$env = $_SERVER[$k] ?? $_ENV[$k] ?? $env;
}

if ('local' === $env) {
if (!$needsAutoValueResolution) {
$this->resolveAllVariables();
}

return;
}

if (is_file($p = "$path.$env")) {
$this->doLoad($overrideExistingVars, [$p]);
$this->doLoad($overrideExistingVars,$needsAutoValueResolution,[$p]);
}

if (is_file($p = "$path.$env.local")) {
$this->doLoad($overrideExistingVars, [$p]);
$this->doLoad($overrideExistingVars, $needsAutoValueResolution, [$p]);
}

if (!$needsAutoValueResolution) {
$this->resolveAllVariables();
}
}

Expand DownExpand Up@@ -166,7 +184,13 @@ public function bootEnv(string $path, string $defaultEnv = 'dev', array $testEnv
*/
public function overload(string $path, string ...$extraPaths): void
{
$this->doLoad(true, \func_get_args());
$needsAutoValueResolution = 1 === \func_num_args();

$this->doLoad(true, $needsAutoValueResolution, \func_get_args());

if (!$needsAutoValueResolution) {
$this->resolveAllVariables();
}
}

/**
Expand DownExpand Up@@ -219,12 +243,13 @@ public function populate(array $values, bool $overrideExistingVars = false): voi
/**
* Parses the contents of an .env file.
*
* @param string $data The data to be parsed
* @param string $path The original file name where data where stored (used for more meaningful error messages)
* @param string $data The data to be parsed
* @param string $path The original file name where data where stored (used for more meaningful error messages)
* @param bool $needsValueResolution true when the value resolution needs to be done automatically
*
* @throws FormatException when a file has a syntax error
*/
public function parse(string $data, string $path = '.env'): array
public function parse(string $data, string $path = '.env', bool $needsValueResolution = true): array
{
$this->path = $path;
$this->data = str_replace(["\r\n", "\r"], "\n", $data);
Expand All@@ -245,7 +270,7 @@ public function parse(string $data, string $path = '.env'): array
break;

case self::STATE_VALUE:
$this->values[$name] = $this->lexValue();
$this->values[$name] = $this->lexValue($needsValueResolution);
$state = self::STATE_VARNAME;
break;
}
Expand DownExpand Up@@ -291,7 +316,7 @@ private function lexVarname(): string
return $matches[2];
}

private function lexValue(): string
private function lexValue(bool $needsValueResolution): string
{
if (preg_match('/[ \t]*+(?:#.*)?$/Am', $this->data, $matches, 0, $this->cursor)) {
$this->moveCursor($matches[0]);
Expand DownExpand Up@@ -340,7 +365,11 @@ private function lexValue(): string
++$this->cursor;
$value = str_replace(['\\"', '\r', '\n'], ['"', "\r", "\n"], $value);
$resolvedValue = $value;
$resolvedValue = $this->resolveVariables($resolvedValue, $loadedVars);

if ($needsValueResolution) {
$resolvedValue = $this->resolveVariables($resolvedValue, $loadedVars);
}

$resolvedValue = $this->resolveCommands($resolvedValue, $loadedVars);
$resolvedValue = str_replace('\\\\', '\\', $resolvedValue);
$v .= $resolvedValue;
Expand All@@ -363,7 +392,11 @@ private function lexValue(): string
}
$value = rtrim($value);
$resolvedValue = $value;
$resolvedValue = $this->resolveVariables($resolvedValue, $loadedVars);

if ($needsValueResolution) {
$resolvedValue = $this->resolveVariables($resolvedValue, $loadedVars);
}

$resolvedValue = $this->resolveCommands($resolvedValue, $loadedVars);
$resolvedValue = str_replace('\\\\', '\\', $resolvedValue);

Expand DownExpand Up@@ -545,14 +578,35 @@ private function createFormatException(string $message): FormatException
return new FormatException($message, new FormatExceptionContext($this->data, $this->path, $this->lineno, $this->cursor));
}

private function doLoad(bool $overrideExistingVars, array $paths): void
private function doLoad(bool $overrideExistingVars,bool $needsValueResolution,array $paths): void
{
foreach ($paths as $path) {
if (!is_readable($path) || is_dir($path)) {
throw new PathException($path);
}

$this->populate($this->parse(file_get_contents($path), $path), $overrideExistingVars);
$this->populate($this->parse(file_get_contents($path), $path, $needsValueResolution), $overrideExistingVars);
}
}

private function resolveAllVariables(): void
{
$resolvedVars = [];
$loadedVars = array_flip(explode(',', $_SERVER['SYMFONY_DOTENV_VARS'] ?? $_ENV['SYMFONY_DOTENV_VARS'] ?? ''));
unset($loadedVars['']);

foreach ($_ENV as $name => $value) {
if ($name === 'SYMFONY_DOTENV_VARS') {
continue;
}

$resolvedValue = $this->resolveVariables($value, $loadedVars);

if ($resolvedValue !== $value) {
$resolvedVars[$name] = $resolvedValue;
}
}

$this->populate($resolvedVars, true);
}
}
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