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Add history persistence to file #23

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Add history persistence to file #23

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43 changes: 39 additions & 4 deletions clac.c
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Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,8 @@
#include <ctype.h>
#include <errno.h>
#include <math.h>
#include <sys/stat.h>
#include <sys/types.h>
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@waltertross waltertross Feb 24, 2020 •
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can we delete this line? It doesn't seem to be used (compilation passes without it).

#include "linenoise.h"
#include "sds.h"

Expand All @@ -45,6 +47,8 @@

/* Config */
#define BUFFER_MAX 1024
#define HIST_DIR "clac"
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Suggested change
#define HIST_DIR "clac"
#define CLAC_DIR "clac"

#define HIST_FILE "clac/history"
#define WORDS_FILE "clac/words"
#define CAPACITY 0xFF

Expand Down Expand Up @@ -475,8 +479,8 @@ static char *hints(const char *input, int *color, int *bold) {
return result;
}

static sds buildpath(const char *fmt, const char *dir) {
return sdscatfmt(sdsempty(), fmt, dir, WORDS_FILE);
static sds buildpath(const char *fmt, const char *dir, const char *file) {
return sdscatfmt(sdsempty(), fmt, dir, file);
}

static void config() {
Expand All @@ -485,9 +489,9 @@ static void config() {
if (getenv("CLAC_WORDS") != NULL) {
filename = sdsnew(getenv("CLAC_WORDS"));
} else if (getenv("XDG_CONFIG_HOME") != NULL) {
filename = buildpath("%s/%s", getenv("XDG_CONFIG_HOME"));
filename = buildpath("%s/%s", getenv("XDG_CONFIG_HOME"), WORDS_FILE);
} else if (getenv("HOME") != NULL) {
filename = buildpath("%s/.config/%s", getenv("HOME"));
filename = buildpath("%s/.config/%s", getenv("HOME"), WORDS_FILE);
}

if (filename) {
Expand All @@ -496,6 +500,26 @@ static void config() {
}
}

static sds history_config() {
sds directory = NULL;
sds filename = NULL;
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Suggested change
sds filename = NULL;
sds filename = NULL;
int directory_ok;


if (getenv("XDG_DATA_HOME") != NULL) {
directory = buildpath("%s/%s", getenv("XDG_DATA_HOME"), HIST_DIR);
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Suggested change
directory = buildpath("%s/%s", getenv("XDG_DATA_HOME"), HIST_DIR);
directory = buildpath("%s/%s", getenv("XDG_DATA_HOME"), CLAC_DIR);

filename = buildpath("%s/%s", getenv("XDG_DATA_HOME"), HIST_FILE);
} else if (getenv("HOME") != NULL) {
directory = buildpath("%s/.local/share/%s", getenv("HOME"), HIST_DIR);
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Suggested change
directory = buildpath("%s/.local/share/%s", getenv("HOME"), HIST_DIR);
directory = buildpath("%s/.local/share/%s", getenv("HOME"), CLAC_DIR);

filename = buildpath("%s/.local/share/%s", getenv("HOME"), HIST_FILE);
} else {
return NULL;
}

mkdir(directory, 0700);
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Suggested change
mkdir(directory, 0700);
directory_ok = mkdir(directory, 0700) == 0 || errno == EEXIST;

sdsfree(directory);

return filename;
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Suggested change
return filename;
return directory_ok ? filename : NULL;

}

int main(int argc, char **argv) {
char *line;

Expand All @@ -518,9 +542,15 @@ int main(int argc, char **argv) {
exit(1);
}

sds history = history_config();

linenoiseSetHintsCallback(hints);
linenoiseSetCompletionCallback(completion);

if (history) {
linenoiseHistoryLoad(history);
}

while((line = linenoise("> ")) != NULL) {
if (!strcmp(line, "words")) {
node *curr = head;
Expand All @@ -541,9 +571,14 @@ int main(int argc, char **argv) {
sdsclear(result);
linenoiseHistoryAdd(line);
free(line);

if (history) {
linenoiseHistorySave(history);
}
}

sdsfree(result);
sdsfree(history);
cleanup();

return 0;
Expand Down