_removebranches.c

#include <ncurses.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>

#define MAX_BRANCH_NAME_LEN 4096
#define MAX_BRANCHES 100

#define COLOR_PAIR_HEADER 1
#define COLOR_PAIR_LIST_NORMAL 2
#define COLOR_PAIR_LIST_HIGHLIGHTED 3

int main() {
  int ch, done = 0;
  int i = 0, numBranches, highlighted = 0;
  char **gitBranchList = malloc(MAX_BRANCHES * sizeof(char *));
  int *branchesToDelete = malloc(MAX_BRANCHES * sizeof(int));

  char *line, *lineCpy = malloc(MAX_BRANCH_NAME_LEN), *tmpStr = malloc(4096);
  size_t len = 0;
  ssize_t lineSize = 0;
  FILE *f;
  f = fopen("/tmp/git_branches.tmp", "r");
  for (i = 0; i < MAX_BRANCHES; i++) { gitBranchList[i] = NULL; branchesToDelete[i] = 0; }
  for (i = 0; i < MAX_BRANCHES; i++) {
    line = fgetln(f, &len);
    if (len == 0) { break; }
    memcpy(lineCpy, line, len);
    lineCpy[len] = NULL;
    gitBranchList[i] = malloc(MAX_BRANCH_NAME_LEN);
    sprintf(gitBranchList[i], "%s", lineCpy);
  }
  fclose(f);
  initscr();
  cbreak();
  keypad(stdscr, TRUE);
  noecho();
  start_color();
  init_pair(COLOR_PAIR_HEADER, COLOR_BLACK, COLOR_YELLOW);
  init_pair(COLOR_PAIR_LIST_NORMAL, COLOR_BLUE, COLOR_WHITE);
  init_pair(COLOR_PAIR_LIST_HIGHLIGHTED, COLOR_CYAN, COLOR_BLACK);
  while (!done) {
    clear();
    attron(COLOR_PAIR(COLOR_PAIR_HEADER));
    printw("Remove branches:\n");
    attroff(COLOR_PAIR(COLOR_PAIR_HEADER));
    for (i = 0; i < MAX_BRANCHES; i++) {
      if (!gitBranchList[i]) { numBranches = i; break; }
      attron(COLOR_PAIR(branchesToDelete[i] ? COLOR_PAIR_LIST_NORMAL : COLOR_PAIR_LIST_HIGHLIGHTED));
      printw("%c%c", gitBranchList[i][0], gitBranchList[i][1]);
      attron(COLOR_PAIR(highlighted == i ? COLOR_PAIR_LIST_NORMAL : COLOR_PAIR_LIST_HIGHLIGHTED));
      printw(&(gitBranchList[i][2]));
    }
    ch = getch();
    switch (ch) {
      case 'q': {
        done = 1;
        refresh();
        endwin();
        break;
      }
      case 'k': {
        if (highlighted > 0) { highlighted--; }
        break;
      }
      case KEY_UP: {
        if (highlighted > 0) { highlighted--; }
        break;
      }
      case 'j': {
        if (highlighted < numBranches - 1) { highlighted++; }
        break;
      }
      case KEY_DOWN: {
        if (highlighted < numBranches - 1) { highlighted++; }
        break;
      }
      case '\n': {
        for (i = 0; i < MAX_BRANCHES; i++) {
          if (!gitBranchList[i]) { break; }
          if (branchesToDelete[i]) {
            sprintf(tmpStr, "git branch -D %s\n", gitBranchList[i]);
            system(tmpStr);
          }
        }
        refresh();
        endwin();
        return 0;
        break;
      }
      case ' ': {
        branchesToDelete[highlighted] = !branchesToDelete[highlighted];
        break;
      }
    }
    usleep(3000);
    refresh();
  }
  refresh();
  endwin();
  return 0;
}

removebranches

#!/bin/bash
rm -f ~/c/bin/_removebranches.bin
gcc ~/c/bin/_removebranches.c -lncurses -o ~/c/bin/_removebranches.bin
git branch -v > /tmp/git_branches.tmp
~/c/bin/_removebranches.bin