myvesta php replacement for gnu 'grep' (but without regular expression)

bin/v-php-func

@@ -2,7 +2,7 @@
 # info: calling myVesta PHP functions
 # options: FUNCTION
 #
-# The function is calling myVesta PHP functions.
+# The function is calling myVesta or standard PHP functions directly from bash
 
 #----------------------------------------------------------#
 #                       Action                             #

func/bash-to-php-interpreter.php

@@ -27,13 +27,36 @@ if (!function_exists($func)) {
     if (!function_exists($func)) myvesta_throw_error(2, 'Function does not exists');
 }
 
+$insert_stdin_at_position=false;
+if ($func=="myvesta_grep") $insert_stdin_at_position=1;
+
 $params=array();
 
-if ($myvesta_stdin!='') $params[]=$myvesta_stdin;
+$added=0;
+$stdin_content='';
+ $myvesta_stdin_return_not_found=false;
+if ($myvesta_stdin!='' && $insert_stdin_at_position===false) {$params[]=$myvesta_stdin; $added++;}
+
 for ($i=2; $i<$counter; $i++) {
     $argv[$i]=myvesta_fix_backslashes($argv[$i]);
+    if ($insert_stdin_at_position!==false && $myvesta_stdin=='') if ($insert_stdin_at_position==$added) {$stdin_content=$argv[$i]; $added++; continue;}
     $params[]=$argv[$i];
+    $added++;
 }
+if ($insert_stdin_at_position!=false) {
+    if ($myvesta_stdin=='') {
+        $file_or_stdin=$stdin_content;
+        if (!file_exists($file_or_stdin)) {
+            $myvesta_stdin_return_not_found=true;
+            $myvesta_stdin='';
+        } else {
+            $myvesta_stdin=file_get_contents($file_or_stdin);
+        }
+    }
+    if (isset($params[$insert_stdin_at_position])) array_splice($params, $insert_stdin_at_position, 0, array($myvesta_stdin));
+    else $params[$insert_stdin_at_position]=$myvesta_stdin;
+}
+//print_r($params); exit;
 
 $r=call_user_func_array($func, $params);
 if (is_bool($r)) {

func/main.php

@@ -14,9 +14,88 @@ function myvesta_echo($str) {
     echo $str;
 }
 
-function myvesta_exit($code) {
+function myvesta_exit($code, $echo='') {
     global $SHLVL, $myvesta_echo_done, $myvesta_last_echo;
     // myvesta_echo ("==================== ".$argv[0].": ".$code." ====================\n");
+    if ($echo!='') myvesta_echo($echo);
+    if ($SHLVL<3 && $myvesta_echo_done==true) {
+        $last_char=substr($myvesta_last_echo, -1, 1);
+        if ($last_char!="\n") echo "\n";
+    }
+    exit($code);
+}
+
+$myvesta_current_user=exec('whoami', $myvesta_output, $myvesta_return_var);
+if ($myvesta_current_user != 'root') {myvesta_echo ("ERROR: You must be root to execute this script"); myvesta_exit(1);}
+
+function myvesta_throw_error($code, $message) {
+    global $myvesta_exit_on_error;
+    if ($message!=='') myvesta_echo ("ERROR: ".$message);
+    if ($myvesta_exit_on_error) myvesta_exit($code);
+    return $code;
+}
+
+function myvesta_fix_backslashes($s) {
+    $s=str_replace("\\n", "\n", $s);
+    $s=str_replace("\\r", "\r", $s);
+    $s=str_replace("\\t", "\t", $s);
+    return $s;
+}
+
+function myvesta_check_args ($requried_arguments, $arguments) {
+    global $argv;
+    $argument_counter=count($argv);
+    $argument_counter--;
+    $argv[0]=str_replace('/usr/local/vesta/bin/', '', $argv[0]);
+    // myvesta_echo ( "-------------------- ".$argv[0]." --------------------\n");
+    if ($argument_counter<$requried_arguments) {
+        $arguments=str_replace(" ", "' '", $arguments);
+        $arguments="'".$arguments."'";
+        return myvesta_throw_error(MYVESTA_ERROR_MISSING_ARGUMENTS, "Usage: $command $arguments");
+    }
+    $argument_arr=explode(" ", $arguments);
+    $i=1;
+    foreach ($argument_arr as $argument) {
+        $GLOBALS[$argument]=myvesta_fix_backslashes($argv[$i]);
+        $i++;
+    }
+}
+
+function myvesta_fix_args() {
+    global $argv;
+    $i=0;
+    foreach ($argv as $argument) {
+        if ($i==0) {$i++; continue;}
+        $argv[$i]=myvesta_fix_backslashes($argv[$i]);
+        $i++;
+    }
+}
+
+function myvesta_test_func () {
+    $args=func_get_args();
+    myvesta_echo ("You said: ");
+    myvesta_echo (trim(print_r ($args, true)));
+}
+<?php
+
+$myvesta_exit_on_error=true;
+define('MYVESTA_ERROR_PERMISSION_DENIED', 1);
+define('MYVESTA_ERROR_MISSING_ARGUMENTS', 2);
+define('MYVESTA_ERROR_FILE_DOES_NOT_EXISTS', 3);
+define('MYVESTA_ERROR_STRING_NOT_FOUND', 4);
+define('MYVESTA_ERROR_GENERAL', 5);
+
+function myvesta_echo($str) {
+    global $myvesta_echo_done, $myvesta_last_echo;
+    $myvesta_echo_done=true;
+    $myvesta_last_echo=$str;
+    echo $str;
+}
+
+function myvesta_exit($code, $echo='') {
+    global $SHLVL, $myvesta_echo_done, $myvesta_last_echo;
+    // myvesta_echo ("==================== ".$argv[0].": ".$code." ====================\n");
+    if ($echo!='') myvesta_echo($echo);
     if ($SHLVL<3 && $myvesta_echo_done==true) {
         $last_char=substr($myvesta_last_echo, -1, 1);
         if ($last_char!="\n") echo "\n";
@@ -71,9 +150,7 @@ function myvesta_fix_args() {
 }
 
 function myvesta_test_func () {
-    global $myvesta_stdin;
     $args=func_get_args();
-    if ($myvesta_stdin!='') array_splice( $args, 0, 0, array($myvesta_stdin) );
     myvesta_echo ("You said: ");
     myvesta_echo (trim(print_r ($args, true)));
 }

func/string.php

@@ -72,6 +72,40 @@ function myvesta_strip_in_file_between_including_borders($file, $left, $right) {
     return true;
 }
 
+// --- mixed functions ---
+
+function myvesta_grep($find, $file_or_stdin, $count=0, $quiet=0) {
+    global $myvesta_stdin, $myvesta_stdin_return_not_found;
+    if ($count=='-c') {$count=1; $quiet=0;}
+    if ($count=='-q') {$count=0; $quiet=1;}
+    //echo "find          = " . $find."\n"; echo "file_or_stdin = " . $file_or_stdin."\n"; echo "count         = " . $count."\n"; echo "quiet         = " . $quiet."\n"; exit;
+    if ($myvesta_stdin_return_not_found==true) {
+        if ($count==1) return myvesta_throw_error (MYVESTA_ERROR_STRING_NOT_FOUND, "0");
+        return myvesta_throw_error (MYVESTA_ERROR_STRING_NOT_FOUND, "");
+    }
+    
+    $arr=explode("\n", $file_or_stdin);
+
+    $buf='';
+    $hits=0;
+    foreach ($arr as $line) {
+        if (strpos($line, $find)!==false) {
+            $hits++;
+            if ($quiet==false && $count==false) $buf.=$line."\n";
+        }
+    }
+    if ($count==1) {
+        if ($hits==0) return myvesta_exit (MYVESTA_ERROR_STRING_NOT_FOUND, "0");
+        return $hits;
+    }
+    if ($quiet==1) {
+        if ($hits==0) return myvesta_exit (MYVESTA_ERROR_STRING_NOT_FOUND, "");
+        return true;
+    }
+    if ($hits==0) return myvesta_exit (MYVESTA_ERROR_STRING_NOT_FOUND, "");
+    return $buf;
+}
+
 // --- string functions ---
 
 function myvesta_str_get_between (&$text, $left_substring, $right_substring, $start=0, $return_left_substring=0, $return_right_substring=0, $left_substring_necessary=1, $right_substring_necessary=1) {