#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];
}
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(¤t_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;
+ if (best_distance == 0) {
+ fprintf(stderr, "or\n");
+ } else {
+ fprintf(stderr, "The program '%s' is not installed. Install it by executing:\n", binary_name);
+ }
+ fprintf(stderr, " pkg install %s\n", current_package);
+ best_distance = 0;
} else if (best_distance == distance) {
guesses_at_best_distance++;
} else if (best_distance == -1 || best_distance > distance) {
}
}
+ if (best_distance == 0) return 127;
+
if (best_distance == -1 || best_distance > 3) {
- printf("%s: command not found\n", command_not_found);
+ fprintf(stderr, "%s: command not found\n", command_not_found);
} else {
- printf("No command '%s' found, did you mean:\n", command_not_found);
+ fprintf(stderr, "No command '%s' found, did you mean:\n", command_not_found);
if (guesses_at_best_distance == 1) {
// Only one suggestion - show it:
- printf(" Command '%s' from package '%s'\n", best_command_guess, best_package_guess);
+ fprintf(stderr, " 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(¤t_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);
+ fprintf(stderr, " Command '%s' from package '%s'\n", binary_name, current_package);
}
} else { // Package
strncpy(current_package, current_line, sizeof(current_package));
}
}
}
+ return 127;
}