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#define _POSIX_C_SOURCE 200809L
#include "module-store.h"
#include "store.h"
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/* Test host for a verified module: reads commands from stdin and prints one
* JSON snapshot per command. Not a product interface. With --store the app's
* states live in that tree store: it starts from them, and frame changes are
* saved at the end of input or by save. --batch N defers saving and saves
* every N commands (and at the end), so N events share one commit.
* down NAME | up NAME | frame [N] | type NAME HEX|- | message NAME HEX|- | tick NAME | time MS | replace PATH | save | show
* budget N (the work an event may do) | memory N (what the states may hold) | work (the last event's work)
* (type gives a text input its bytes, message a message input its payload, laid out as the module says;
* message NAME @PATH gives it the bytes of the file at PATH, of any size.)
* Text states and text views print as JSON strings; cursors as byte positions;
* lists as arrays of objects; indices as positions; a table view as an array
* with an object of its columns per row. A failed view or cell is null. */
/* time MS sets the time events see (milliseconds since 1970); tick NAME is a timer's tick. */
static bool load(const char *path, PureModule *module) {
char error[160];
if (pure_module_read(path, module, error, sizeof(error)) == PURE_OK) return true;
fprintf(stderr, "%s: %s\n", path, error);
return false;
}
static bool json_span(void *context, PureSpan span) {
(void)context;
for (size_t i = 0; i < span.size; ++i) {
unsigned char c = span.data[i];
if (c == '"' || c == '\\') printf("\\%c", c);
else if (c < 0x20) printf("\\u%04x", c);
else putchar(c);
}
return true;
}
/* A text view is collected first: it may fail after some bytes. */
typedef struct { unsigned char bytes[1 << 16]; size_t used; bool fits; } Collected;
static bool collect(void *context, PureSpan span) {
Collected *c = context;
c->fits = c->fits && span.size <= sizeof(c->bytes) - c->used;
if (c->fits && span.size) memcpy(c->bytes + c->used, span.data, span.size);
if (c->fits) c->used += span.size;
return true;
}
static uint32_t le32(const unsigned char *p) { return (uint32_t)p[0] | (uint32_t)p[1] << 8 | (uint32_t)p[2] << 16 | (uint32_t)p[3] << 24; }
static void show_cell(const PureModule *m, uint32_t field, PureCell cell, bool kept);
/* A list kept past an event holds a list field's value in its items' stored form (Pure 027's stage 3): its items. */
static void show_value_items(const PureModule *m, uint32_t record, const unsigned char *bytes, size_t size) {
const PureRecord *r = &m->record[record];
putchar('[');
for (size_t at = 0, item = 0; at < size; ++item) {
printf("%s{", item ? "," : "");
for (unsigned f = 0; f < r->count && at <= size; ++f) {
uint8_t type = m->record_field_type[r->first + f];
PureCell cell = {0};
if (type == PURE_RECORD_TEXT || type == PURE_RECORD_LIST) {
cell.size = size - at >= 4 ? le32(bytes + at) : 0;
cell.text = (unsigned char *)bytes + at + 4;
at += 4 + cell.size;
} else {
memcpy(&cell.i64, bytes + at, 8);
at += 8;
}
printf("%s\"%s\":", f ? "," : "", m->record_field_names[r->first + f]);
show_cell(m, r->first + f, cell, true);
}
putchar('}');
}
putchar(']');
}
static void show_cell(const PureModule *m, uint32_t field, PureCell cell, bool kept) {
uint8_t type = m->record_field_type[field];
if (type == PURE_RECORD_BOOL) printf("%s", cell.num ? "true" : "false");
else if (type == PURE_RECORD_I64) printf("%" PRId64, cell.i64);
else if (type == PURE_RECORD_NUMBER) printf("%.17g", cell.num);
else if (type == PURE_RECORD_LIST && kept) show_value_items(m, (uint32_t)m->record_field_default[field].i64, cell.text, cell.size);
else if (type == PURE_RECORD_LIST) printf("%" PRId64, cell.i64); /* an event's list: its number among the event's */
else {
putchar('"');
json_span(NULL, (PureSpan){cell.text, cell.size});
putchar('"');
}
}
static void show_list(const PureModule *m, const PureList *list, const PureRecord *record, bool kept) {
putchar('[');
for (size_t at = 0; at < pure_list_count(list); ++at) {
printf("%s{", at ? "," : "");
for (unsigned f = 0; f < record->count; ++f) {
printf("%s\"%s\":", f ? "," : "", m->record_field_names[record->first + f]);
show_cell(m, record->first + f, pure_list_get(list, at, f), kept);
}
putchar('}');
}
putchar(']');
}
/* A number, bool, i64 or text view, or a column at a row. */
static void show_value(PureApp *app, uint32_t view, size_t row) {
const PureModule *m = app->module;
static Collected text;
text.used = 0;
text.fits = true;
double value;
int64_t integer;
bool column = m->view_table[view];
if (m->view_type[view] == PURE_VIEW_I64) {
if (!(column ? pure_app_cell_i64(app, view, row, &integer) : pure_app_view_i64(app, view, &integer))) printf("null");
else printf("%" PRId64, integer);
} else if (m->view_type[view] == PURE_VIEW_TEXT) {
PureResult result = column ? pure_app_cell_text(app, view, row, collect, &text)
: pure_app_view_text(app, view, collect, &text);
if (result != PURE_OK || !text.fits) printf("null");
else {
putchar('"');
json_span(NULL, (PureSpan){text.bytes, text.used});
putchar('"');
}
} else if (!(column ? pure_app_cell(app, view, row, &value) : pure_app_view(app, view, &value))) printf("null");
else if (m->view_type[view] == PURE_VIEW_BOOL) printf("%s", value ? "true" : "false");
else printf("%.17g", value);
}
static void show(PureApp *app, const char *failure) {
const PureModule *m = app->module;
printf("{\"states\":{");
for (uint32_t i = 0; i < m->states; ++i) {
printf("%s\"%s\":", i ? "," : "", m->state_names[i]);
if (m->state_type[i] == PURE_STATE_TEXT) {
putchar('"');
pure_draft_read(app->texts[i], 0, pure_draft_size(app->texts[i]), json_span, NULL);
putchar('"');
} else if (m->state_type[i] == PURE_STATE_LIST)
show_list(m, app->lists[i], &m->record[m->state_ref[i]], !(m->state_flags[i] & PURE_LIST_ROWS >> 8));
else if (m->state_type[i] == PURE_STATE_BOOL) printf("%s", app->values[i].num ? "true" : "false");
else if (m->state_type[i] == PURE_STATE_I64) printf("%" PRId64, app->values[i].i64);
else printf("%.17g", app->values[i].num);
}
printf("},\"views\":{");
bool first = true;
for (uint32_t i = 0; i < m->views; ++i) {
if (m->view_table[i]) continue;
printf("%s\"%s\":", first ? "" : ",", m->view_names[i]);
first = false;
if (m->view_type[i] != PURE_VIEW_TABLE) { show_value(app, i, 0); continue; }
putchar('[');
for (size_t row = 0; row < pure_app_rows(app, i); ++row) {
printf("%s{", row ? "," : "");
for (uint32_t c = 0, shown = 0; c < m->views; ++c) {
if (m->view_table[c] != i + 1) continue;
printf("%s\"%s\":", shown++ ? "," : "", m->view_names[c]);
show_value(app, c, row);
}
putchar('}');
}
putchar(']');
}
printf("},\"tick\":%llu,\"successfulEvents\":%llu,\"fault\":\"%s\",\"error\":%s%s%s}\n",
(unsigned long long)app->ticks, (unsigned long long)app->events, pure_fault_name(app->fault),
failure ? "\"" : "", failure ? failure : "null", failure ? "\"" : "");
}
static int hex(char c) {
return c >= '0' && c <= '9' ? c - '0' : c >= 'a' && c <= 'f' ? c - 'a' + 10 : -1;
}
int main(int argc, char **argv) {
static PureModule modules[2];
bool stored = argc >= 4 && !strcmp(argv[2], "--store");
long batch = argc == 6 && stored && !strcmp(argv[4], "--batch") ? strtol(argv[5], NULL, 10) : 0;
bool usage = argc != 2 && !(stored && argc == 4) && !(batch > 0 && batch <= 100000);
if (usage || !load(argv[1], &modules[0])) {
if (usage) fputs("pure-run MODULE [--store PATH [--batch N]] < commands\n", stderr);
return 2;
}
if (stored && pure_store_init(argv[3]) != PURE_OK) { fprintf(stderr, "cannot open store %s\n", argv[3]); return 2; }
unsigned active = 0;
PureApp app;
PureResult started = pure_app_start(&app, &modules[active], stored ? pure_tree_data(argv[3]) : (PureData){0});
if (started != PURE_OK) { fprintf(stderr, "cannot start (%d)\n", (int)started); return 2; }
if (batch && !pure_app_defer(&app, true)) { fputs("cannot defer saving\n", stderr); return 2; }
long unsaved = 0;
static char line[1 << 16];
static unsigned char text[1 << 15];
int status = 0;
while (fgets(line, sizeof(line), stdin)) {
char command[16] = "", argument[256] = "", data[sizeof(line)] = "";
const char *failure = NULL;
line[strcspn(line, "\r\n")] = 0;
if (sscanf(line, "%15s %255s %65535s", command, argument, data) < 1) continue;
if (!strcmp(command, "down") || !strcmp(command, "up")) {
int input = pure_module_input(app.module, argument);
if (input < 0) failure = "unknown input";
else if (pure_app_input(&app, (uint32_t)input, command[0] == 'd' ? PURE_EDGE_DOWN : PURE_EDGE_UP) != PURE_OK)
failure = "event failed";
} else if (!strcmp(command, "type") || !strcmp(command, "message")) {
int input = pure_module_input(app.module, argument);
size_t length = strcmp(data, "-") ? strlen(data) / 2 : 0;
for (size_t i = 0; i < length && length * 2 == strlen(data); ++i)
text[i] = (unsigned char)(hex(data[2 * i]) << 4 | hex(data[2 * i + 1]));
PureSpan given = {text, length};
unsigned char *read = NULL; /* message NAME @PATH: the file's bytes */
if (data[0] == '@') {
FILE *file = fopen(data + 1, "rb");
long size = file && !fseek(file, 0, SEEK_END) ? ftell(file) : -1;
if (size >= 0 && !fseek(file, 0, SEEK_SET) && (read = malloc(size ? (size_t)size : 1)) &&
fread(read, 1, (size_t)size, file) == (size_t)size)
given = (PureSpan){read, (size_t)size};
else failure = "cannot read the file";
if (file) fclose(file);
}
if (failure) {
} else if (input < 0) failure = "unknown input";
else if ((command[0] == 't' ? pure_app_text(&app, (uint32_t)input, given)
: pure_app_message(&app, (uint32_t)input, NULL, -1, given)) != PURE_OK)
failure = "event failed";
free(read);
} else if (!strcmp(command, "tick")) {
int input = pure_module_input(app.module, argument);
if (input < 0) failure = "unknown input";
else if (pure_app_tick(&app, (uint32_t)input) != PURE_OK) failure = "event failed";
} else if (!strcmp(command, "time")) {
char *end;
double now = strtod(argument, &end);
if (!*argument || *end || !(now >= 0 && now < 1e15)) failure = "time";
else app.now = now;
} else if (!strcmp(command, "frame")) {
long count = *argument ? strtol(argument, NULL, 10) : 1;
if (count < 1 || count > 600) failure = "frame count";
for (long i = 0; !failure && i < count; ++i)
if (pure_app_frame(&app) != PURE_OK) failure = "event failed";
} else if (!strcmp(command, "replace")) {
if (!load(argument, &modules[!active])) failure = "invalid module";
else if (pure_app_replace(&app, &modules[!active]) != PURE_OK) failure = "replace failed";
else active = !active;
} else if (!strcmp(command, "save")) {
if (pure_app_save(&app) != PURE_OK) failure = "save failed";
} else if (!strcmp(command, "budget")) { /* the work each event may do (0: the default) */
char *end;
unsigned long long budget = strtoull(argument, &end, 10);
if (!*argument || *end) failure = "budget";
else pure_app_work(&app, budget);
} else if (!strcmp(command, "memory")) { /* what the states may hold (0: no budget) */
char *end;
unsigned long long bytes = strtoull(argument, &end, 10);
if (!*argument || *end) failure = "memory";
else pure_app_memory(&app, (size_t)bytes);
} else if (!strcmp(command, "work")) printf("{\"work\":%llu}\n", (unsigned long long)app.work); /* the last event's */
else if (strcmp(command, "show")) failure = "unknown command";
if (batch && strcmp(command, "show") && ++unsaved == batch) {
unsaved = 0;
if (pure_app_save(&app) != PURE_OK) failure = "save failed";
}
if (failure) status = 1;
show(&app, failure);
}
if (pure_app_save(&app) != PURE_OK) { fputs("cannot save\n", stderr); status = 1; }
pure_app_stop(&app);
return status;
}
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