From c3362aefa2e762211409923cfff065541bebf9e7 Mon Sep 17 00:00:00 2001
From: Saumit Dinesan <justsaumit@protonmail.com>
Date: Sun, 22 May 2022 00:37:40 +0530
Subject: ble.sh & z4h addition

---
 .local/src/blesh/lib/init-msys1.sh | 130 +++++++++++++++++++++++++++++++++++++
 1 file changed, 130 insertions(+)
 create mode 100644 .local/src/blesh/lib/init-msys1.sh

(limited to '.local/src/blesh/lib/init-msys1.sh')

diff --git a/.local/src/blesh/lib/init-msys1.sh b/.local/src/blesh/lib/init-msys1.sh
new file mode 100644
index 0000000..596ef8f
--- /dev/null
+++ b/.local/src/blesh/lib/init-msys1.sh
@@ -0,0 +1,130 @@
+# this script is a part of blesh (https://github.com/akinomyoga/ble.sh) under BSD-3-Clause license
+function ble-edit/io:msys1/is-msys1 {
+  local cr; cr=$'\r'
+  [[ $OSTYPE == msys && ! $cr ]]
+}
+function ble-edit/io:msys1/get-winpid.proc {
+  /usr/bin/ps | /usr/bin/gawk -v pid="$1" '
+    BEGIN {
+      cygpid_len = 9;
+      winpid_len = 36;
+    }
+    NR == 1 {
+      line = $0;
+      if (!match(line, /.*\yPID\y/)) next;
+      cygpid_end = RLENGTH;
+      if (!match(line, /.*\yWINPID\y/)) next;
+      winpid_end = RLENGTH;
+      next;
+    }
+    function get_last_number(line, limit, _, head, i) {
+      head = substr(line, 1, limit);
+      if (i = match(head, /[0-9]+$/))
+        return substr(head, i, RLENGTH);
+      return -1;
+    }
+    {
+      cygpid = get_last_number($0, cygpid_end);
+      if (cygpid != pid) next;
+      print get_last_number($0, winpid_end);
+      exit
+    }
+  '
+}
+function ble-edit/io:msys1/compile-helper {
+  local helper=$1
+  [[ -x $helper && -s $helper && $helper -nt $_ble_base/lib/init-msys1.sh ]] && return 0
+  gcc -O2 -s -o "$helper" -xc - << EOF || return 1
+// For MSYS 1.0
+#include <stdio.h>
+#include <windows.h>
+#include <sys/stat.h>
+#include <signal.h>
+
+BOOL is_process_alive(HANDLE handle) {
+  DWORD result;
+  return GetExitCodeProcess(handle, &result) && result == STILL_ACTIVE;
+}
+
+BOOL is_file(const char* filename) {
+  struct stat st;
+  return stat(filename, &st) == 0 && S_ISREG(st.st_mode);
+}
+
+int main(int argc, char** argv) {
+  const char* winpid = argv[1];
+  const char* fname_buff = argv[2];
+  const char* fname_read = argv[3];
+
+  signal(SIGINT, SIG_IGN);
+  //signal(SIGQUIT, SIG_IGN);
+
+  int ppid = atoi(winpid);
+  if (!ppid) {
+    fprintf(stderr, "ble.sh (msys1): invalid process ID '%s'\n", winpid);
+    return 1;
+  }
+  HANDLE parent_process = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, ppid);
+  if (parent_process == NULL) {
+    fprintf(stderr, "ble.sh (msys1): failed to open the parent process '%s'\n", winpid);
+    return 1;
+  }
+
+  int exit_code = 0;
+  BOOL terminate = FALSE;
+  while (!terminate) {
+    unlink(fname_read);
+    if (rename(fname_buff, fname_read) != 0) {
+      perror("ble.sh (msys1)");
+      fprintf(stderr, "ble.sh (msys1): failed to move the file '%s' -> '%s'\n", fname_buff, fname_read);
+      terminate = TRUE;
+      exit_code = 1;
+      break;
+    }
+
+    FILE* f = fopen(fname_read, "r");
+    if (!f) {
+      fprintf(stderr, "ble.sh (msys1): failed to open the file '%s'\n", fname_read);
+      terminate = TRUE;
+      exit_code = 1;
+      break;
+    }
+
+    for (;;) {
+      if (!is_process_alive(parent_process)) {
+        terminate = TRUE;
+        break;
+      }
+      if (is_file(fname_buff)) break;
+
+      int count = 0;
+      char buff[4096];
+      while (count = fread(&buff, 1, sizeof buff, f))
+        fwrite(buff, 1, count, stdout);
+      fflush(stdout);
+      Sleep(20);
+    }
+    fclose(f);
+  }
+
+  CloseHandle(parent_process);
+  return exit_code;
+}
+EOF
+  [[ -x $helper ]]
+}
+function ble-edit/io:msys1/start-background {
+  local basename=$_ble_edit_io_fname2
+  local fname_buff=$basename.buff
+  ble-edit/io:msys1/is-msys1 || return 1
+  local helper=$_ble_base_cache/init-msys1-helper.exe
+  local helper2=$_ble_base_run/$$.init-msys1-helper.exe
+  ble-edit/io:msys1/compile-helper "$helper" &&
+    /usr/bin/cp "$helper" "$helper2" || return 1
+  local winpid
+  ble/util/assign winpid 'ble-edit/io:msys1/get-winpid.proc $$'
+  [[ $winpid ]] || return 1
+  : >| "$fname_buff"
+  ble/fd#alloc _ble_edit_io_fd2 '> "$fname_buff"'
+  "$helper2" "$winpid" "$fname_buff" "${fname_buff%.buff}.read" | ble-edit/io/check-ignoreeof-loop & disown
+} &>/dev/null
-- 
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