| // Copyright 2016 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include <stdio.h> |
| #include <string.h> |
| |
| #define MAX_WIDTH 40 |
| #define MAX(a, b) ((a > b) ? a : b) |
| #define MIN(a, b) ((a < b) ? a : b) |
| |
| // Returns the length of the longst line of the message. |
| static int LongestLineLength(int argc, char** argv) { |
| int max_len = 0; |
| int cur_line = 0; |
| |
| for (int i = 0; i < argc; i++) { |
| int word_len = strlen(argv[i]) + 1; |
| |
| // If the word itself is too long to fit in a line, then |
| // we return the maximum width. |
| if (word_len >= MAX_WIDTH) |
| return MAX_WIDTH; |
| |
| if (cur_line + word_len >= MAX_WIDTH) { |
| cur_line = word_len; |
| } else { |
| cur_line += word_len; |
| } |
| |
| max_len = MAX(cur_line, max_len); |
| } |
| |
| return max_len; |
| } |
| |
| static void PrintPaddedBreak(int pad) { |
| for (int i = 0; i < pad; i++) { |
| printf(" "); |
| } |
| printf(" |\n"); |
| } |
| |
| // Prints the message |
| static void PrintMessage(int argc, char** argv, int longest) { |
| int cur_line_len = 0; |
| |
| for (int i = 0; i < argc; i++) { |
| int word_len = strlen(argv[i]) + 1; |
| |
| if (cur_line_len == 0) |
| printf("| "); |
| |
| // If it all fits in the line, then print the word and move on. |
| if (cur_line_len + word_len <= MAX_WIDTH) { |
| printf("%s ", argv[i]); |
| |
| if (cur_line_len + word_len == MAX_WIDTH) { |
| PrintPaddedBreak(longest - cur_line_len - word_len); |
| cur_line_len = 0; |
| continue; |
| } |
| |
| cur_line_len += word_len; |
| |
| if (i == argc - 1) |
| PrintPaddedBreak(longest - cur_line_len); |
| |
| continue; |
| } |
| |
| // Create a line break if the current line is nonempty. |
| if (cur_line_len > 0) { |
| PrintPaddedBreak(longest - cur_line_len); |
| printf("| "); |
| } |
| |
| // If the word itself is too long, then we need to break it apart. |
| // Otherwise, we print the current word and move on. |
| if (word_len > MAX_WIDTH) { |
| char* str = argv[i]; |
| int processed = 0; |
| for (int j = 0; j <= word_len / MAX_WIDTH; j++) { |
| int len = MIN(MAX_WIDTH, strlen(str)); |
| printf("%.*s", len, str); |
| PrintPaddedBreak(longest - len); |
| str += len; |
| processed += len; |
| if (processed >= word_len - 1) |
| break; |
| printf("| "); |
| } |
| |
| cur_line_len = 0; |
| } else { |
| printf("%s ", argv[i]); |
| cur_line_len = word_len; |
| if (word_len == MAX_WIDTH || i == argc - 1) { |
| PrintPaddedBreak(longest - cur_line_len); |
| } |
| } |
| } |
| } |
| |
| int main(int argc, char** argv) { |
| if (argc == 1) { |
| printf("Usage: cowsay [message]\n"); |
| return 1; |
| } |
| |
| // No wordwrap because I'm too lazy. |
| int bubble_width = LongestLineLength(argc - 1, argv + 1) + 1; |
| |
| printf(" _"); |
| for (int i = 0; i < bubble_width; i++) |
| printf("_"); |
| printf(" \n"); |
| |
| PrintMessage(argc - 1, argv + 1, bubble_width - 1); |
| |
| printf(" -"); |
| for (int i = 0; i < bubble_width; i++) |
| printf("-"); |
| printf(" \n"); |
| |
| printf(" \\ ^__^\n"); |
| printf(" \\ (oo)\\_____\n"); |
| printf(" (__)\\ )\\/\\\n"); |
| printf(" ||----w |\n"); |
| printf(" || ||\n"); |
| |
| return 0; |
| } |