Formatting and comments added

This commit is contained in:
Jim Monte 2019-12-23 01:16:10 -05:00 committed by Holger Vogt
parent 3a2a05f7b0
commit 7990a82f02
1 changed files with 28 additions and 21 deletions

View File

@ -38,13 +38,13 @@ NON-STANDARD FEATURES
============================================================================*/ ============================================================================*/
#include "cmpp.h"
#include <stdio.h>
#include <ctype.h> #include <ctype.h>
#include <stdlib.h>
#include <stdarg.h> #include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h> #include <string.h>
#include "cmpp.h"
/* *********************************************************************** */ /* *********************************************************************** */
@ -52,17 +52,17 @@ NON-STANDARD FEATURES
char *prog_name; char *prog_name;
/* Initialize print_error() with the name of the program */ /* Initialize external variable prog_name with the name of the program.
* A copy is not made. */
void init_error (char *program_name) void init_error(char *program_name)
{ {
prog_name = program_name; prog_name = program_name;
} } /* end of function init_error */
/* Print an error message to stderr */ /* Print an error message to stderr. The message is prefixed with the
* name of the program and a newline character is added to the end. */
void print_error(const char *fmt, ...) void print_error(const char *fmt, ...)
{ {
va_list ap; va_list ap;
@ -73,37 +73,41 @@ void print_error(const char *fmt, ...)
fprintf(stderr, "\n"); fprintf(stderr, "\n");
va_end(ap); va_end(ap);
} } /* end of function print_error */
/* Convert a string to all lower case */ /* Convert a string to all lower case */
void str_to_lower(char *s) void str_to_lower(char *s)
{ {
int i; int i;
char c; char c;
for(i = 0; (c = s[i]) != '\0'; i++) for(i = 0; (c = s[i]) != '\0'; i++) {
s[i] = tolower_c(c); s[i] = tolower_c(c);
} }
} /* end of function str_to_lower */
/* If *path_p is relative, prefix with the CMPP output or input string
* build the path and open the file and return the path that was created. */
FILE *fopen_cmpp(const char **path_p, const char *mode) FILE *fopen_cmpp(const char **path_p, const char *mode)
{ {
const char *path = *path_p; const char *path = *path_p;
char buf[MAX_PATH_LEN+1]; char buf[MAX_PATH_LEN + 1];
if(path[0] != '/') { if (path[0] != '/') {
const char *e = getenv((*mode == 'w') ? "CMPP_ODIR" : "CMPP_IDIR"); const char *e = getenv((*mode == 'w') ? "CMPP_ODIR" : "CMPP_IDIR");
if(e) { if (e) {
if(strlen(e) + 1 + strlen(path) < sizeof(buf)) { if (strlen(e) + 1 + strlen(path) < sizeof(buf)) {
strcpy(buf, e); strcpy(buf, e);
strcat(buf, "/"); strcat(buf, "/");
strcat(buf, path); strcat(buf, path);
path = buf; path = buf;
} else { }
else {
path = NULL; path = NULL;
} }
} }
@ -112,4 +116,7 @@ FILE *fopen_cmpp(const char **path_p, const char *mode)
*path_p = strdup(path); *path_p = strdup(path);
return fopen(path, mode); return fopen(path, mode);
} } /* end of function fopen_cmpp */