command-not-found: Instruct to use 'packages'

[termux-packages] / packages / command-not-found / command-not-found.c

diff --git a/packages/command-not-found/command-not-found.c b/packages/command-not-found/command-not-found.c
index 08641a2..6a02347 100644 (file)
--- a/packages/command-not-found/command-not-found.c
+++ b/packages/command-not-found/command-not-found.c
@@ -2,14 +2,13 @@
 #include <string.h>
 #include <stdbool.h>
 
-#define STRINGIFY(x) #x
-#define TOSTRING(x) STRINGIFY(x)
+#include "commands.h"
 
-inline int termux_min3(unsigned int a, unsigned int b, unsigned int c) {
+static inline int termux_min3(unsigned int a, unsigned int b, unsigned int c) {
        return (a < b ? (a < c ? a : c) : (b < c ? b : c));
 }
 
-int termux_levenshtein_distance(char const* restrict s1, char const* restrict s2) {
+static int termux_levenshtein_distance(char const* restrict s1, char const* restrict s2) {
        unsigned int s1len = strlen(s1);
        unsigned int s2len = strlen(s2);
        unsigned int matrix[s2len+1][s1len+1];
@@ -31,30 +30,20 @@ int main(int argc, char** argv) {
        }
        char* command_not_found = argv[1];
 
-       FILE* commands_file = fopen(TOSTRING(TERMUX_COMMANDS_LISTING), "r");
-       if (commands_file == NULL) {
-               perror(TOSTRING(TERMUX_COMMANDS_LISTING));
-               return 1;
-       }
-
        int best_distance = -1;
        int guesses_at_best_distance = 0;
        char current_package[128];
        char best_package_guess[128];
        char best_command_guess[128];
-       char* current_line = NULL;
-       while (true) {
-               size_t buffer_length = sizeof(current_line);
-               ssize_t read_bytes = getline(&current_line, &buffer_length, commands_file);
-               if (read_bytes <= 1) break;
-               size_t line_length = strlen(current_line);
-               current_line[line_length-1] = 0;
+       const int num_commands = sizeof(commands) / sizeof(commands[0]);
+       for (int i = 0; i < num_commands; i++) {
+               char const* current_line = commands[i];
                if (current_line[0] == ' ') { // Binary
-                       char* binary_name = current_line + 1;
+                       char const* binary_name = current_line + 1;
                        int distance = termux_levenshtein_distance(command_not_found, binary_name);
                        if (distance == 0 && strcmp(command_not_found, binary_name) == 0) {
-                               printf("The program '%s' is currently not installed. You can install it by executing:\n apt install %s\n", binary_name, current_package);
-                               return 0;
+                               printf("The program '%s' is not installed. Install it by executing:\n packages install %s\n", binary_name, current_package);
+                               return 127;
                        } else if (best_distance == distance) {
                                guesses_at_best_distance++;
                        } else if (best_distance == -1 || best_distance > distance) {
@@ -77,15 +66,10 @@ int main(int argc, char** argv) {
                        printf(" Command '%s' from package '%s'\n", best_command_guess, best_package_guess);
                } else {
                        // Multiple suggestions at the same distance - show them all:
-                       rewind(commands_file);
-                       while (true) {
-                               size_t buffer_length = sizeof(current_line);
-                               ssize_t read_bytes = getline(&current_line, &buffer_length, commands_file);
-                               if (read_bytes <= 1) break;
-                               size_t line_length = strlen(current_line);
-                               current_line[line_length-1] = 0;
+                       for (int i = 0; i < num_commands; i++) {
+                               char const* current_line = commands[i];
                                if (current_line[0] == ' ') { // Binary
-                                       char* binary_name = current_line + 1;
+                                       char const* binary_name = current_line + 1;
                                        int distance = termux_levenshtein_distance(command_not_found, binary_name);
                                        if (best_distance == distance) {
                                                printf(" Command '%s' from package '%s'\n", binary_name, current_package);
@@ -96,5 +80,6 @@ int main(int argc, char** argv) {
                        }
                }
        }
+       return 127;
 }