squish_run.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>

#include "squish_run.h"
#include "squish_tokenize.h"

#include "w_run.h"

int numPrompts = 0;

/**
 * Print a prompt if the input is coming from a TTY
 */
static void 
prompt(FILE *pfp, FILE *ifp)
{
	if (isatty(fileno(ifp))) {
		fputs(PROMPT_STRING, pfp);
	}
}

int DLOBALi = 0;

/**
 * Actually do the work
 */
int
execFullCommandLine(
		FILE *ofp,
		char ** const tokens,
		int nTokens,
		int verbosity)
{

	if (verbosity > 0) {
		fprintf(stderr, " + ");
		fprintfTokens(stderr, tokens, 1);
	}

	/** Now actually do something with this command, or command set */
	run(ofp, tokens, nTokens, verbosity);

	// puts("+--------------+");
	// puts("|              |");
	// puts("|              |");
	// printf("|      %d       |\n", DLOBALi);
	// puts("|              |");
	// puts("|              |");
	// puts("+--------------+");
	// DLOBALi++;

	// for (int i = 0; i < DLOBALi %50; i++) {
	// 	printf("⬛");
	// }


	return 0;
}

/**
 * Load each line and perform the work for it
 */
int
runScript(
		FILE *ofp, FILE *pfp, FILE *ifp,
		const char *filename, int verbosity
	)
{
	char linebuf[LINEBUFFERSIZE];
	char *tokens[MAXTOKENS];
	int lineNo = 1;
	int nTokens, executeStatus = 0;

	fprintf(stderr, "SHELL PID %ld\n", (long) getpid());

	prompt(pfp, ifp);
	while ((nTokens = parseLine(ifp,
				tokens, MAXTOKENS,
				linebuf, LINEBUFFERSIZE, verbosity - 3)) > 0) {
		lineNo++;

		if (nTokens > 0) {

			executeStatus = execFullCommandLine(ofp, tokens, nTokens, verbosity);

			if (executeStatus < 0) {
				fprintf(stderr, "Failure executing '%s' line %d:\n    ",
						filename, lineNo);
				fprintfTokens(stderr, tokens, 1);
				return executeStatus;
			}
		}
		prompt(pfp, ifp);
	}

	return (0);
}


/**
 * Open a file and run it as a script
 */
int
runScriptFile(FILE *ofp, FILE *pfp, const char *filename, int verbosity)
{
	FILE *ifp;
	int status;

	ifp = fopen(filename, "r");
	if (ifp == NULL) {
		fprintf(stderr, "Cannot open input script '%s' : %s\n",
				filename, strerror(errno));
		return -1;
	}

	status = runScript(ofp, pfp, ifp, filename, verbosity);
	fclose(ifp);
	return status;
}