📄 to.c
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/*$TITLE=Command to jump 'TO' a specified project*/
/*
*********************************************************************************************************
* TO
*
* Command to jump TO a specified project
*
*
*
* Filename : TO.C
* Programmer(s) : Jean J. Labrosse
*********************************************************************************************************
*
* This program allows the user to change directory by simply specifying a name which is associated with
* the directory's path.
*
*
* Program use:
*
* TO name [path]
*
* where :
*
* name Is the name associated with a path
* [path] Is an optional path used to specify the path associated with the project
*
* Notes : TO assumes the presence of the file TO.TBL on the root directory of the current drive
* TO.TBL is an ASCII file which has the following format:
*
* name, path
* name, path
* . .
* . .
* name, path
*
* where, 'name' is the name associated with 'path'
*********************************************************************************************************
*/
/*$PAGE*/
/*
*********************************************************************************************************
* INCLUDE FILES
*********************************************************************************************************
*/
#include <DIR.H>
#include <STDIO.H>
#include <STRING.H>
#include <CTYPE.H>
#include <CONIO.H>
/*
*********************************************************************************************************
* CONSTANTS
*********************************************************************************************************
*/
#define NUL 0x00
#define TO_NOT_EOF 0
#define TO_EOF -1
#define TRUE 1
#define FALSE 0
/*
*********************************************************************************************************
* FUNCTION PROTOTYPES
*********************************************************************************************************
*/
void main(int argc, char *argv[]);
static void ToDispUsage(void);
static void ToErrNoFile(void);
static void ToFindPath(char *project);
static int ToAddPath(char *project, char *path);
static int ToRdLine(void);
/*
*********************************************************************************************************
* GLOBAL VARIABLES
*********************************************************************************************************
*/
static char ToName[100];
static char ToPath[200];
static char ToLine[300];
static char ToLineRd[300];
static FILE *ToFilePtr;
static FILE *ToTempFilePtr;
/*$PAGE*/
/*
*********************************************************************************************************
* TO ENTRY POINT
*********************************************************************************************************
*/
void main(int argc, char *argv[])
{
int stat;
switch (argc) {
case 1: ToDispUsage(); /* TO */
break;
case 2: ToFilePtr = fopen("\\TO.TBL", "r"); /* TO <name> */
if (ToFilePtr != NULL) {
ToFindPath(argv[1]); /* Find path assoicated with name */
fclose(ToFilePtr);
} else {
ToErrNoFile(); /* \TO.TBL does not exist */
}
break;
case 3: ToFilePtr = fopen("\\TO.TBL", "r"); /* TO <name> <path> */
ToTempFilePtr = fopen("ZZZZZZZZ.ZZZ", "w"); /* Create temporary file */
if (ToFilePtr != NULL && ToTempFilePtr != NULL) {
stat = ToAddPath(argv[1], argv[2]); /* Add new entry in \TO.TBL */
fclose(ToFilePtr);
fclose(ToTempFilePtr);
if (stat == 1) { /* See if unique name ... */
ToFilePtr = fopen("\\TO.TBL", "w"); /* ... ZZZZZZZZ.ZZZ -> \TO.TBL */
ToTempFilePtr = fopen("ZZZZZZZZ.ZZZ", "r");
while (fgets(ToLine, 100, ToTempFilePtr) != NULL) {
fputs(ToLine, ToFilePtr);
}
fclose(ToFilePtr);
fclose(ToTempFilePtr);
}
remove("ZZZZZZZZ.ZZZ"); /* Delete temporary file */
} else {
ToErrNoFile();
}
break;
default: ToDispUsage(); /* default */
break;
}
}
/*$PAGE*/
/*
*********************************************************************************************************
* DISPLAY THE USAGE OF THIS PROGRAM
*********************************************************************************************************
*/
static void ToDispUsage(void)
{
printf("TO.EXE\n\n");
printf("Program to change directory:\n");
printf(" This program reads a file in the ROOT directory called \"\\TO.TBL\".\n");
printf(" This file is an ASCII file.\n");
printf(" This file contains a table of names and their path.\n");
printf(" This name is separated from the directory by a comma.\n\n");
printf("Usage: TO <name> [path]\n\n");
printf(" To add a new name:\n");
printf(" Type TO followed by the name and finally, its path\n");
}
/*
*********************************************************************************************************
* DISPLAY ERROR MESSAGE SINCE \TO.TBL NOT FOUND
*********************************************************************************************************
*/
static void ToErrNoFile(void)
{
printf("Error:\n");
printf(" \"\\TO.TBL\" does not exist.\n");
printf(" \"\\TO.TBL\" is an ASCII file that contains a name and a path.\n");
printf(" The file is organized as follows:\n");
printf(" <name>, <path>\n");
}
/*$PAGE*/
/*
*********************************************************************************************************
* FIND PATH ASSOCIATED WITH NAME
*********************************************************************************************************
*/
static void ToFindPath(char *name)
{
int stat;
char *ptr;
ptr = name; /* Convert name to upper case */
while (*ptr) {
*ptr = toupper(*ptr);
ptr++;
}
do {
stat = ToRdLine(); /* Read line from \TO.TBL and extract name & path */
if (strcmp(name, ToName) == 0) { /* See if found desired name */
clrscr(); /* Clear the screen */
chdir(ToPath); /* Change directory to path associated with name */
return;
}
} while (stat != TO_EOF); /* Read all lines from \TO.TBL */
printf("Invalid NAME.\n"); /* Name not found in \TO.TBL */
}
/*$PAGE*/
/*
*********************************************************************************************************
* ADD PATH ASSOCIATED WITH NAME TO \TO.TBL
*********************************************************************************************************
*/
static int ToAddPath(char *name, char *path)
{
char *ptr;
char buf[20];
ptr = name; /* Convert name name to upper case */
while (*ptr) {
*ptr = toupper(*ptr);
ptr++;
}
while (ToRdLine() != TO_EOF) { /* Read line from \TO.TBL */
if (strcmp(name, ToName) == 0) { /* See if name already in \TO.TBL */
clrscr(); /* Clear the screen */
printf("Name <%s> already exist.\n", name); /* Indicate that already exist */
return (0);
}
fprintf(ToTempFilePtr, "%s", ToLineRd);
}
strcpy(buf, " "); /* Place name name within 11 characters */
ptr = &buf[0];
while (*name)
*ptr++ = *name++;
*ptr++ = ',';
ptr = path; /* Convert path to upper case characters */
while (*ptr) {
*ptr = toupper(*ptr);
ptr++;
}
fprintf(ToTempFilePtr, "%s%s\n", buf, path); /* Add new name & path at the end of TO.TBL */
return (1);
}
/*$PAGE*/
/*
*********************************************************************************************************
* READ A LINE FROM \TO.TBL AND SEPARATE TOKENS
*********************************************************************************************************
*/
static int ToRdLine(void)
{
char *ptr;
char *source;
char *desti;
if (fgets(ToLine, 100, ToFilePtr) != NULL) {
strcpy(ToLineRd, ToLine);
ptr = strchr(ToLine, '\n'); /* Remove the newline character */
if (ptr != NULL) {
*ptr = NUL;
}
ptr = strtok(ToLine, ","); /* Get name */
source = ptr; /* Remove any spaces */
desti = &ToName[0];
while (*source) {
if (*source != ' ') {
*desti++ = toupper(*source);
source++;
} else {
source++;
}
}
*desti = NUL;
ptr = strtok(NULL, ","); /* Get path */
source = ptr; /* Remove any spaces */
desti = &ToPath[0];
while (*source) {
if (*source != ' ') {
*desti++ = *source++;
} else {
source++;
}
}
*desti = NUL;
return (TO_NOT_EOF);
} else {
return (TO_EOF);
}
}
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