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#include "lsp.h"
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "buffer.h"
#include "process.h"
#include "reactor.h"
struct lsp {
const char *name;
char *const *command;
struct process *process;
struct reactor *reactor;
struct buffer *stderr_buffer;
struct lsp_client client_impl;
uint32_t stdin_event;
uint32_t stdout_event;
uint32_t stderr_event;
};
struct lsp *lsp_create(char *const command[], struct reactor *reactor,
struct buffer *stderr_buffer,
struct lsp_client client_impl, const char *name) {
// check length of command
if (command == NULL) {
return NULL;
}
uint32_t command_len = 0;
while (command[command_len] != NULL) {
++command_len;
}
if (command_len == 0) {
return NULL;
}
struct lsp *lsp = calloc(1, sizeof(struct lsp));
char **cmd = calloc(command_len + 1, sizeof(const char *));
memcpy(cmd, command, sizeof(const char *) * command_len);
cmd[command_len] = NULL;
lsp->command = cmd;
if (name != NULL) {
lsp->name = strdup(name);
} else {
#ifdef __unix__
const char *lslash = strrchr(lsp->command[0], '/');
#elif defined(_WIN32) || defined(WIN32)
const char *lslash = strrchr(lsp->command[0], '\\');
#endif
if (lslash == NULL) {
lsp->name = strdup(lsp->command[0]);
} else {
lsp->name = strdup(lslash + 1);
}
}
lsp->stderr_buffer = stderr_buffer;
lsp->client_impl = client_impl;
lsp->reactor = reactor;
lsp->stdin_event = -1;
lsp->stdout_event = -1;
lsp->stderr_event = -1;
return lsp;
}
void lsp_destroy(struct lsp *lsp) {
free((void *)lsp->name);
if (lsp->process != NULL) {
free(lsp->process);
}
if (lsp->command != NULL) {
char *command = lsp->command[0];
while (command != NULL) {
free(command);
++command;
}
free((void *)lsp->command);
}
free(lsp);
}
uint32_t lsp_update(struct lsp *lsp, struct lsp_response **responses,
uint32_t responses_capacity) {
(void)responses;
(void)responses_capacity;
if (!lsp_server_running(lsp)) {
return -1;
}
// read stderr
if (lsp->stderr_event != (uint32_t)-1) {
uint8_t buf[1024];
if (reactor_poll_event(lsp->reactor, lsp->stderr_event)) {
ssize_t nb = 0;
while ((nb = read(lsp->process->stderr, buf, 1024)) > 0) {
buffer_set_readonly(lsp->stderr_buffer, false);
buffer_add(lsp->stderr_buffer, buffer_end(lsp->stderr_buffer), buf, nb);
buffer_set_readonly(lsp->stderr_buffer, true);
}
}
}
return 0;
}
int lsp_start_server(struct lsp *lsp) {
struct process p;
struct process_create_result res = process_create(lsp->command, &p);
if (!res.ok) {
// TODO: losing error message here
return -1;
}
lsp->process = calloc(1, sizeof(struct process));
memcpy(lsp->process, &p, sizeof(struct process));
lsp->stderr_event = reactor_register_interest(
lsp->reactor, lsp->process->stderr, ReadInterest);
return 0;
}
int lsp_restart_server(struct lsp *lsp) {
if (lsp_server_running(lsp)) {
lsp_stop_server(lsp);
}
return lsp_start_server(lsp);
}
void lsp_stop_server(struct lsp *lsp) {
process_kill(lsp->process);
process_destroy(lsp->process);
free(lsp->process);
lsp->process = NULL;
}
bool lsp_server_running(const struct lsp *lsp) {
if (lsp->process == NULL) {
return false;
}
return process_running(lsp->process);
}
uint64_t lsp_server_pid(const struct lsp *lsp) {
if (!lsp_server_running(lsp)) {
return -1;
}
return lsp->process->id;
}
const char *lsp_server_name(const struct lsp *lsp) { return lsp->name; }
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