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#define _POSIX_C_SOURCE 200809L
#include "module.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.
* down NAME | up NAME | frame [N] | type NAME HEX|- | replace PATH | show
* Text states and text views print as JSON strings; cursors as byte positions;
* lists as arrays of objects; indices as positions. A failed view is null. */
static const char *const fault_names[] = {"none", "divide", "non_finite", "clamp", "limit", "not_found", "encoding"};
static bool load(const char *path, PureModule *module) {
FILE *file = fopen(path, "rb");
static unsigned char bytes[1 << 17];
size_t size = file ? fread(bytes, 1, sizeof(bytes), file) : 0;
bool ok = file && !ferror(file) && size < sizeof(bytes);
if (file) fclose(file);
char error[128];
if (!ok) { fprintf(stderr, "cannot read %s\n", path); return false; }
if (pure_module_load(bytes, size, module, error, sizeof(error)) != PURE_OK) {
fprintf(stderr, "%s: %s\n", path, error);
return false;
}
return true;
}
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 void show_list(const PureModule *m, const PureList *list, const PureRecord *record) {
putchar('[');
for (size_t at = 0; at < pure_list_count(list); ++at) {
printf("%s{", at ? "," : "");
for (unsigned f = 0; f < record->count; ++f) {
PureCell cell = pure_list_get(list, at, f);
printf("%s\"%s\":", f ? "," : "", m->record_field_names[record->first + f]);
if (!m->record_field_text[record->first + f]) printf("%.17g", cell.num);
else {
putchar('"');
json_span(NULL, (PureSpan){cell.text, cell.size});
putchar('"');
}
}
putchar('}');
}
putchar(']');
}
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]]);
else printf("%.17g", app->values[i]);
}
printf("},\"views\":{");
for (uint32_t i = 0; i < m->views; ++i) {
printf("%s\"%s\":", i ? "," : "", m->view_names[i]);
double value;
static Collected text;
text.used = 0;
text.fits = true;
if (m->view_type[i] == PURE_VIEW_TEXT) {
if (pure_app_view_text(app, i, collect, &text) != PURE_OK || !text.fits) printf("null");
else {
putchar('"');
json_span(NULL, (PureSpan){text.bytes, text.used});
putchar('"');
}
} else if (pure_app_view(app, i, &value)) printf("%.17g", value);
else printf("null");
}
printf("},\"tick\":%llu,\"successfulEvents\":%llu,\"fault\":\"%s\",\"error\":%s%s%s}\n",
(unsigned long long)app->ticks, (unsigned long long)app->events, fault_names[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];
if (argc != 2 || !load(argv[1], &modules[0])) {
if (argc != 2) fputs("pure-run MODULE < commands\n", stderr);
return 2;
}
unsigned active = 0;
PureApp app;
if (pure_app_start(&app, &modules[active], (PureData){0}) != PURE_OK) { fputs("cannot start\n", stderr); return 2; }
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")) {
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]));
if (input < 0) failure = "unknown input";
else if (pure_app_text(&app, (uint32_t)input, (PureSpan){text, length}) != PURE_OK) failure = "event failed";
} 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, "show")) failure = "unknown command";
if (failure) status = 1;
show(&app, failure);
}
pure_app_stop(&app);
return status;
}
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