We have `NULL' in order to not need to write `(char *)0' anymore.

[mmh] / uip / whatnowsbr.c

diff --git a/uip/whatnowsbr.c b/uip/whatnowsbr.c
index 032566e..aefe67f 100644 (file)
--- a/uip/whatnowsbr.c
+++ b/uip/whatnowsbr.c
@@ -128,7 +128,7 @@ WhatNow(int argc, char **argv)
        char buf[BUFSIZ], prompt[BUFSIZ];
        char **argp, **arguments;
        struct stat st;
-       char *attach = (char *)0;  /* attachment header field name */
+       char *attach = NULL;  /* attachment header field name */
        char cwd[MAXPATHLEN + 1];  /* current working directory */
        char file[MAXPATHLEN + 1];  /* file name buffer */
        char shell[MAXPATHLEN + 1];  /* shell response buffer */
@@ -148,7 +148,7 @@ WhatNow(int argc, char **argv)
        ** Get the initial current working directory.
        */
 
-       if (getcwd(cwd, sizeof (cwd)) == (char *)0) {
+       if (getcwd(cwd, sizeof (cwd)) == NULL) {
                adios("getcwd", "could not get working directory");
        }
 
@@ -188,7 +188,7 @@ WhatNow(int argc, char **argv)
                                continue;
 
                        case ATTACHSW:
-                               if (attach != (char *)0)
+                               if (attach != NULL)
                                        adios(NULL, "only one attachment header field name at a time!");
                                if (!(attach = *argp++) || *attach == '-')
                                        adios(NULL, "missing argument to %s",
@@ -300,7 +300,7 @@ WhatNow(int argc, char **argv)
                        ** the absolute path.
                        */
 
-                       if (*(argp+1) == (char *)0) {
+                       if (*(argp+1) == NULL) {
                                sprintf(buf, "$SHELL -c \"cd;pwd\"");
                        } else {
                                writesomecmd(buf, BUFSIZ, "cd", "pwd", argp);
@@ -308,7 +308,7 @@ WhatNow(int argc, char **argv)
                        if ((f = popen_in_dir(cwd, buf, "r")) != (FILE *)0) {
                                fgets(cwd, sizeof (cwd), f);
 
-                               if (strchr(cwd, '\n') != (char *)0)
+                               if (strchr(cwd, '\n') != NULL)
                                                *strchr(cwd, '\n') = '\0';
 
                                pclose(f);
@@ -344,15 +344,15 @@ WhatNow(int argc, char **argv)
                        ** -n    numbers listing
                        */
 
-                       if (attach == (char *)0) {
-                               advise((char *)0, "can't list because no header field name was given.");
+                       if (attach == NULL) {
+                               advise(NULL, "can't list because no header field name was given.");
                                break;
                        }
 
-                       l = (char *)0;
+                       l = NULL;
                        n = 0;
 
-                       while (*++argp != (char *)0) {
+                       while (*++argp != NULL) {
                                if (strcmp(*argp, "-l") == 0)
                                        l = "/";
 
@@ -370,7 +370,7 @@ WhatNow(int argc, char **argv)
                        }
 
                        if (n == -1)
-                               advise((char *)0, "usage is alist [-ln].");
+                               advise(NULL, "usage is alist [-ln].");
 
                        else
                                annolist(drft, attach, l, n);
@@ -382,13 +382,13 @@ WhatNow(int argc, char **argv)
                        ** Attach files to current draft.
                        */
 
-                       if (attach == (char *)0) {
-                               advise((char *)0, "can't attach because no header field name was given.");
+                       if (attach == NULL) {
+                               advise(NULL, "can't attach because no header field name was given.");
                                break;
                        }
 
-                       if (*(argp+1) == (char *)0) {
-                               advise((char *)0, "attach command requires file argument(s).");
+                       if (*(argp+1) == NULL) {
+                               advise(NULL, "attach command requires file argument(s).");
                                break;
                        }
 
@@ -412,7 +412,7 @@ WhatNow(int argc, char **argv)
 
                        if ((f = popen_in_dir(cwd, buf, "r")) != (FILE *)0) {
                                while (fgets(shell, sizeof (shell), f)
-                                               != (char *)0) {
+                                               != NULL) {
                                        *(strchr(shell, '\n')) = '\0';
 
                                        if (*shell == '/')
@@ -438,8 +438,8 @@ WhatNow(int argc, char **argv)
                        ** Detach files from current draft.
                        */
 
-                       if (attach == (char *)0) {
-                               advise((char *)0, "can't detach because no header field name was given.");
+                       if (attach == NULL) {
+                               advise(NULL, "can't detach because no header field name was given.");
                                break;
                        }
 
@@ -450,7 +450,7 @@ WhatNow(int argc, char **argv)
                        */
 
                        for (n = 0, arguments = argp + 1;
-                                       *arguments != (char *)0;
+                                       *arguments != NULL;
                                        arguments++) {
                                if (strcmp(*arguments, "-n") == 0) {
                                                n = 1;
@@ -468,7 +468,7 @@ WhatNow(int argc, char **argv)
 
                        if (n == 1) {
                                for (arguments = argp + 1;
-                                               *arguments != (char *)0;
+                                               *arguments != NULL;
                                                arguments++) {
                                        if (strcmp(*arguments, "-n") == 0)
                                                continue;
@@ -478,7 +478,7 @@ WhatNow(int argc, char **argv)
                                                annotate(drft, attach, NULL,
                                                                1, 0, n, 1);
 
-                                               for (argp = arguments + 1; *argp != (char *)0; argp++) {
+                                               for (argp = arguments + 1; *argp != NULL; argp++) {
                                                        if (atoi(*argp) > n) {
                                                                if (atoi(*argp) == 1)
                                                                        *argp = "";
@@ -555,15 +555,15 @@ writesomecmd(char *buf, int bufsz, char *cmd, char *trailcmd, char **argp)
        */
        int trailln = strlen(trailcmd) + 3;
        if (ln < 0 || ln + trailln > bufsz)
-               adios((char *)0, "arguments too long");
+               adios(NULL, "arguments too long");
 
        cp = buf + ln;
 
-       while (*++argp != (char *)0) {
+       while (*++argp != NULL) {
                ln = strlen(*argp);
                /* +1 for leading space */
                if (ln + trailln + 1 > bufsz - (cp-buf))
-                       adios((char *)0, "arguments too long");
+                       adios(NULL, "arguments too long");
                *cp++ = ' ';
                memcpy(cp, *argp, ln+1);
                cp += ln;
@@ -1072,7 +1072,7 @@ sendit(char *sp, char **arg, char *file, int pushed)
        char *cp, buf[BUFSIZ], **argp;
        char **arguments, *vec[MAXARGS];
        struct stat st;
-       char *attach = (char *)0;  /* attachment header field name */
+       char *attach = NULL;  /* attachment header field name */
        int attachformat = 0;  /* mhbuild format specifier for attachments */
 
 #ifndef lint