add filesHEADmain

9 files changed, 269 insertions, 0 deletions

diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..09672f8
--- /dev/null
+++ b/.envrc
@@ -0,0 +1,5 @@
+# shellcheck shell=bash
+if ! has nix_direnv_version || ! nix_direnv_version 3.1.1; then
+  source_url "https://raw.githubusercontent.com/nix-community/nix-direnv/3.1.1/direnvrc" "sha256-p+fzQdrms/hDa7g+soShAybJNo4bN4SIAeSfqNKgD5I="
+fi
+use flake
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..a7f06e1
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,20 @@
+# Files generated by phpize and make
+.libs/
+Makefile
+Makefile.fragments
+Makefile.objects
+autom4te.cache/
+build/
+config.h
+config.h.in
+config.log
+config.nice
+config.status
+configure
+configure.ac
+libtool
+mini_xdebug.dep
+mini_xdebug.la
+mini_xdebug.lo
+modules/
+run-tests.php
diff --git a/build.sh b/build.sh
new file mode 100644
index 0000000..e1f9d50
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+PHP_PREFIX="${PHP_PREFIX:-/usr/local}"
+cd "$(dirname "$0")" && \
+    "$PHP_PREFIX/bin/phpize" && \
+    ./configure --with-php-config="$PHP_PREFIX/bin/php-config" --enable-mini-xdebug && \
+    make
diff --git a/config.m4 b/config.m4
new file mode 100644
index 0000000..8527939
--- /dev/null
+++ b/config.m4
@@ -0,0 +1,8 @@
+PHP_ARG_ENABLE([mini_xdebug],
+  [whether to enable mini-xdebug],
+  [AS_HELP_STRING([--enable-mini-xdebug], [Enable mini-xdebug])],
+  [no])
+
+if test "$PHP_MINI_XDEBUG" != "no"; then
+  PHP_NEW_EXTENSION([mini_xdebug], [mini_xdebug.c], [$ext_shared])
+fi
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..7758994
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,64 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": [
+          "systems"
+        ]
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1775793324,
+        "narHash": "sha256-omax7atcZbol+6HJ2RLpP+ZCFcPa5bZ65Hn71RufeWQ=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "9d29d5f667d7467f98efc31881e824fa586c927e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs",
+        "systems": "systems"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..a149d7b
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,27 @@
+{
+  description = "A basic flake with a shell";
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+  inputs.systems.url = "github:nix-systems/default";
+  inputs.flake-utils = {
+    url = "github:numtide/flake-utils";
+    inputs.systems.follows = "systems";
+  };
+
+  outputs =
+    { nixpkgs, flake-utils, ... }:
+    flake-utils.lib.eachDefaultSystem (
+      system:
+      let
+        pkgs = nixpkgs.legacyPackages.${system};
+      in
+      {
+        devShells.default = pkgs.mkShell { packages = [
+          pkgs.autoconf
+          pkgs.bashInteractive
+          pkgs.bison
+          pkgs.pkg-config
+          pkgs.re2c
+        ]; };
+      }
+    );
+}
diff --git a/mini-xdebug b/mini-xdebug
new file mode 100755
index 0000000..9b59f2a
--- /dev/null
+++ b/mini-xdebug
@@ -0,0 +1,3 @@
+#!/bin/sh
+DIR=$(cd "$(dirname "$0")" && pwd)
+php -d "zend_extension=$DIR/modules/mini_xdebug.so" "$@"
diff --git a/mini_xdebug.c b/mini_xdebug.c
new file mode 100644
index 0000000..b9263ba
--- /dev/null
+++ b/mini_xdebug.c
@@ -0,0 +1,132 @@
+#include <stdio.h>
+#include <string.h>
+
+#include "php.h"
+#include "zend_extensions.h"
+
+#define MINI_XDEBUG_CMD_END -1
+#define MINI_XDEBUG_CMD_INVALID 0
+#define MINI_XDEBUG_CMD_NEXT 1
+
+static int g_is_first_statement;
+static int g_do_next_cmd;
+static int g_next_call_depth;
+
+static void mini_xdebug_activate(void) {
+    CG(compiler_options) |= ZEND_COMPILE_EXTENDED_STMT;
+    g_is_first_statement = 1;
+    g_do_next_cmd = 0;
+    g_next_call_depth = 0;
+}
+
+static int get_call_depth(void) {
+    int depth = 0;
+    zend_execute_data* ex = EG(current_execute_data);
+    while (ex) {
+        depth++;
+        ex = ex->prev_execute_data;
+    }
+    return depth;
+}
+
+static void show_context(const char* filename, int lineno) {
+    FILE* fp = fopen(filename, "r");
+    if (!fp) {
+        return;
+    }
+
+    char buf[1024];
+    int n = 0;
+    while (fgets(buf, sizeof(buf), fp)) {
+        n++;
+        if (lineno - 1 <= n && n <= lineno + 1) {
+            fprintf(stdout, "%s %3d | %s", n == lineno ? ">" : " ", n, buf);
+        }
+        if (n > lineno + 1) {
+            break;
+        }
+    }
+    fclose(fp);
+}
+
+static void show_prompt(void) {
+    fprintf(stdout, "(mini-xdebug) ");
+    fflush(stdout);
+}
+
+static int query_command(char* buf) {
+    if (!fgets(buf, sizeof(buf), stdin)) {
+        return MINI_XDEBUG_CMD_END;
+    }
+    buf[strcspn(buf, "\n")] = '\0';
+
+    return (!strcmp(buf, "next") || !strcmp(buf, "n"))
+               ? MINI_XDEBUG_CMD_NEXT
+               : MINI_XDEBUG_CMD_INVALID;
+}
+
+static void mini_xdebug_statement_handler(zend_execute_data* frame) {
+    if (!g_is_first_statement && !g_do_next_cmd) {
+        return;
+    }
+
+    uint32_t lineno = EG(current_execute_data)->opline->lineno;
+    const char* filename = ZSTR_VAL(frame->func->op_array.filename);
+    int depth = get_call_depth();
+
+    if (g_is_first_statement) {
+        g_is_first_statement = 0;
+    } else if (g_do_next_cmd) {
+        if (depth > g_next_call_depth) {
+            return;
+        }
+        g_do_next_cmd = 0;
+    }
+
+    fprintf(stdout, "\n%s:%d\n", filename, lineno);
+    show_context(filename, lineno);
+
+    char command_buf[256];
+    for (;;) {
+        show_prompt();
+        int cmd = query_command(command_buf);
+        if (cmd == MINI_XDEBUG_CMD_NEXT) {
+            g_do_next_cmd = 1;
+            g_next_call_depth = depth;
+            break;
+        } else if (cmd == MINI_XDEBUG_CMD_END) {
+            break;
+        } else {
+            fprintf(stdout, "Available commands: next (n)\n");
+        }
+    }
+}
+
+#ifndef ZEND_EXT_API
+#define ZEND_EXT_API ZEND_DLEXPORT
+#endif
+
+ZEND_EXT_API zend_extension_version_info extension_version_info = {
+    ZEND_EXTENSION_API_NO,
+    (char*)ZEND_EXTENSION_BUILD_ID,
+};
+
+ZEND_DLEXPORT zend_extension zend_extension_entry = {
+    "mini-xdebug",                 /* name */
+    "0.1.0",                       /* version */
+    "nsfisis",                     /* author */
+    "",                            /* URL */
+    "",                            /* copyright */
+    NULL,                          /* startup */
+    NULL,                          /* shutdown */
+    mini_xdebug_activate,          /* activate */
+    NULL,                          /* deactivate */
+    NULL,                          /* message_handler */
+    NULL,                          /* op_array_handler */
+    mini_xdebug_statement_handler, /* statement_handler */
+    NULL,                          /* fcall_begin_handler */
+    NULL,                          /* fcall_end_handler */
+    NULL,                          /* op_array_ctor */
+    NULL,                          /* op_array_dtor */
+    STANDARD_ZEND_EXTENSION_PROPERTIES,
+};
diff --git a/test.php b/test.php
new file mode 100644
index 0000000..8c4a7d9
--- /dev/null
+++ b/test.php
@@ -0,0 +1,4 @@
+<?php
+
+echo "Hello, ";
+echo "Odawara!\n";