void check_opt(int argc, char **argv, int n_opt, int n, const char *help) {
if(n_opt + n >= argc) {
- fprintf(stderr, "Missing argument for %s, expecting %s.\n",
+ fprintf(stderr, "Selector: Missing argument for %s, expecting %s.\n",
argv[n_opt], help);
exit(1);
}
} else error = 1;
if(error) {
- fprintf(stderr, "Value `%s' is not a positive integer.\n", string);
+ fprintf(stderr, "Selector: Value `%s' is not a positive integer.\n", string);
exit(1);
}
}
}
-/*********************************************************************
- A quick and dirty hash table
+/* A quick and dirty hash table */
+
+/* The table itself stores indexes of the strings taken in a char
+ **table. When a string is added, if it was already in the table,
+ **the new index replaces the previous one. */
+
+typedef struct {
+ int size;
+ int *entries;
+} hash_table_t;
- The table itself stores indexes of the strings taken in a char
- **table. When a string is added, if it was already in the table, the
- new index replaces the previous one. */
+hash_table_t *new_hash_table(int size) {
+ int k;
+ hash_table_t *hash_table;
+
+ hash_table = (hash_table_t *) malloc(sizeof(hash_table_t));
-int *new_hash_table(int hash_table_size) {
- int *result, k;
- result = (int *) malloc(hash_table_size * sizeof(int));
- for(k = 0; k < hash_table_size; k++) {
- result[k] = -1;
+ hash_table->size = size;
+ hash_table->entries = (int *) malloc(hash_table->size * sizeof(int));
+
+ for(k = 0; k < hash_table->size; k++) {
+ hash_table->entries[k] = -1;
}
- return result;
+
+ return hash_table;
+}
+
+void free_hash_table(hash_table_t *hash_table) {
+ free(hash_table->entries);
+ free(hash_table);
}
/* Adds new_string in the table, associated to new_index. If this
string was not already in the table, returns -1. Otherwise, returns
the previous index it had. */
-int add_and_get_previous_index(const char *new_string, int new_index,
- char **strings,
- int *hash_table, int hash_table_size) {
+int add_and_get_previous_index(hash_table_t *hash_table,
+ const char *new_string, int new_index,
+ char **strings) {
unsigned int code = 0;
int k;
/* This is my recipe. I checked, it seems to work (as long as
- hash_table_size is not a multiple of 387433 that should be
+ hash_table->size is not a multiple of 387433 that should be
okay) */
for(k = 0; new_string[k]; k++) {
code = code * 387433 + (unsigned int) (new_string[k]);
}
- code = code % hash_table_size;
+ code = code % hash_table->size;
- while(hash_table[code] >= 0) {
+ while(hash_table->entries[code] >= 0) {
/* There is a string with that code */
- if(strcmp(new_string, strings[hash_table[code]]) == 0) {
+ if(strcmp(new_string, strings[hash_table->entries[code]]) == 0) {
/* It is the same string, we keep a copy of the stored index */
- int result = hash_table[code];
+ int result = hash_table->entries[code];
/* Put the new one */
- hash_table[code] = new_index;
+ hash_table->entries[code] = new_index;
/* And return the previous one */
return result;
}
/* This collision was not the same string, let's move to the next
in the table */
- code = (code + 1) % hash_table_size;
+ code = (code + 1) % hash_table->size;
}
/* This string was not already in there, store the index in the
table and return -1 */
- hash_table[code] = new_index;
+ hash_table->entries[code] = new_index;
return -1;
}
/*********************************************************************/
-void store_line(const char *t,
- int nb_lines_max, int *nb_lines, char **lines,
- int hash_table_size, int *hash_table) {
+void store_line(hash_table_t *hash_table,
+ const char *t,
+ int nb_lines_max, int *nb_lines, char **lines) {
int dup;
/* Remove the zsh history prefix */
the list if necessary */
if(hash_table) {
- dup = add_and_get_previous_index(t, *nb_lines, lines, hash_table, hash_table_size);
+ dup = add_and_get_previous_index(hash_table, t, *nb_lines, lines);
} else {
dup = -1;
}
(*nb_lines)++;
}
-void read_file(const char *input_filename,
- int nb_lines_max, int *nb_lines, char **lines,
- int hash_table_size, int *hash_table) {
+void read_file(hash_table_t *hash_table,
+ const char *input_filename,
+ int nb_lines_max, int *nb_lines, char **lines) {
char raw_line[BUFFER_SIZE];
int start, end, k;
file = fopen(input_filename, "r");
if(!file) {
- fprintf(stderr, "Can not open `%s'.\n", input_filename);
+ fprintf(stderr, "Selector: Can not open `%s'.\n", input_filename);
exit(1);
}
if(eol == BUFFER_SIZE) {
raw_line[BUFFER_SIZE - 1] = '\0';
- fprintf(stderr, "Line too long (max is %d characters):\n", BUFFER_SIZE);
+ fprintf(stderr, "Selector: Line too long (max is %d characters):\n", BUFFER_SIZE);
fprintf(stderr, raw_line);
fprintf(stderr, "\n");
exit(1);
raw_line[eol] = '\0';
- store_line(raw_line + start,
- nb_lines_max, nb_lines, lines,
- hash_table_size, hash_table);
+ store_line(hash_table, raw_line + start,
+ nb_lines_max, nb_lines, lines);
start = eol + 1;
}
int color_fg_highlight, color_bg_highlight;
char **lines, **labels;
- int nb_lines, hash_table_size, *hash_table;
+ int nb_lines;
+ hash_table_t *hash_table;
if(!ttyname(STDIN_FILENO)) {
- fprintf(stderr, "The standard input is not a tty.\n");
+ fprintf(stderr, "Selector: The standard input is not a tty.\n");
exit(1);
}
}
else {
- fprintf(stderr, "Unknown option %s.\n", argv[i]);
+ fprintf(stderr, "Selector: Unknown option %s.\n", argv[i]);
error = 1;
}
}
lines = (char **) malloc(nb_lines_max * sizeof(char *));
nb_lines = 0;
- hash_table_size = nb_lines_max * 10;
- hash_table = 0;
if(remove_duplicates) {
- hash_table = new_hash_table(hash_table_size);
+ hash_table = new_hash_table(nb_lines_max * 10);
+ } else {
+ hash_table = 0;
}
if(input_filename[0]) {
- read_file(input_filename,
- nb_lines_max, &nb_lines, lines,
- hash_table_size, hash_table);
+ read_file(hash_table,
+ input_filename,
+ nb_lines_max, &nb_lines, lines);
}
while(i < argc) {
- read_file(argv[i],
- nb_lines_max, &nb_lines, lines,
- hash_table_size, hash_table);
+ read_file(hash_table,
+ argv[i],
+ nb_lines_max, &nb_lines, lines);
i++;
}
- free(hash_table);
+ if(hash_table) {
+ free_hash_table(hash_table);
+ }
/* Now remove the null strings */
color_bg_highlight < 0 || color_bg_highlight >= COLORS) {
echo();
endwin();
- fprintf(stderr, "Color numbers have to be between 0 and %d.\n", COLORS - 1);
+ fprintf(stderr, "Selector: Color numbers have to be between 0 and %d.\n", COLORS - 1);
exit(1);
}
}
fprintf(out, "\n");
} else {
- fprintf(stderr, "Can not open %s for writing.\n", output_filename);
+ fprintf(stderr, "Selector: Can not open %s for writing.\n", output_filename);
exit(1);
}
fclose(out);
projects / selector.git / blobdiff