builtin-grep: use external grep when we can take advantage of it

diff --git a/imap-send.c b/imap-send.c
index e33c78bff2536089676c9d82df3382926ac1196d..52e2400b57118e7f9a27c85212e1c539d16add7c 100644 (file)
--- a/imap-send.c
+++ b/imap-send.c
@@ -335,12 +335,12 @@ next_arg( char **s )
        char *ret;
 
        if (!s || !*s)
-               return 0;
+               return NULL;
        while (isspace( (unsigned char) **s ))
                (*s)++;
        if (!**s) {
-               *s = 0;
-               return 0;
+               *s = NULL;
+               return NULL;
        }
        if (**s == '"') {
                ++*s;
@@ -355,7 +355,7 @@ next_arg( char **s )
                if (**s)
                        *(*s)++ = 0;
                if (!**s)
-                       *s = 0;
+                       *s = NULL;
        }
        return ret;
 }
@@ -475,7 +475,7 @@ v_issue_imap_cmd( imap_store_t *ctx, struct imap_cmd_cb *cb,
                memset( &cmd->cb, 0, sizeof(cmd->cb) );
 
        while (imap->literal_pending)
-               get_cmd_result( ctx, 0 );
+               get_cmd_result( ctx, NULL );
 
        bufl = nfsnprintf( buf, sizeof(buf), cmd->cb.data ? CAP(LITERALPLUS) ?
                           "%d %s{%d+}\r\n" : "%d %s{%d}\r\n" : "%d %s\r\n",
@@ -506,12 +506,12 @@ v_issue_imap_cmd( imap_store_t *ctx, struct imap_cmd_cb *cb,
                                free( cmd );
                                return NULL;
                        }
-                       cmd->cb.data = 0;
+                       cmd->cb.data = NULL;
                } else
                        imap->literal_pending = 1;
        } else if (cmd->cb.cont)
                imap->literal_pending = 1;
-       cmd->next = 0;
+       cmd->next = NULL;
        *imap->in_progress_append = cmd;
        imap->in_progress_append = &cmd->next;
        imap->num_in_progress++;
@@ -607,7 +607,7 @@ parse_imap_list_l( imap_t *imap, char **sp, list_t **curp, int level )
                }
                *curp = cur = xmalloc( sizeof(*cur) );
                curp = &cur->next;
-               cur->val = 0; /* for clean bail */
+               cur->val = NULL; /* for clean bail */
                if (*s == '(') {
                        /* sublist */
                        s++;
@@ -680,11 +680,11 @@ parse_imap_list_l( imap_t *imap, char **sp, list_t **curp, int level )
                        goto bail;
        }
        *sp = s;
-       *curp = 0;
+       *curp = NULL;
        return 0;
 
   bail:
-       *curp = 0;
+       *curp = NULL;
        return -1;
 }
 
@@ -702,7 +702,7 @@ parse_imap_list( imap_t *imap, char **sp )
 static list_t *
 parse_list( char **sp )
 {
-       return parse_imap_list( 0, sp );
+       return parse_imap_list( NULL, sp );
 }
 
 static void
@@ -789,7 +789,7 @@ get_cmd_result( imap_store_t *ctx, struct imap_cmd *tcmd )
                                imap->ns_shared = parse_list( &cmd );
                        } else if (!strcmp( "OK", arg ) || !strcmp( "BAD", arg ) ||
                                   !strcmp( "NO", arg ) || !strcmp( "BYE", arg )) {
-                               if ((resp = parse_response_code( ctx, 0, cmd )) != RESP_OK)
+                               if ((resp = parse_response_code( ctx, NULL, cmd )) != RESP_OK)
                                        return resp;
                        } else if (!strcmp( "CAPABILITY", arg ))
                                parse_capability( imap, cmd );
@@ -813,7 +813,7 @@ get_cmd_result( imap_store_t *ctx, struct imap_cmd *tcmd )
                        if (cmdp->cb.data) {
                                n = socket_write( &imap->buf.sock, cmdp->cb.data, cmdp->cb.dlen );
                                free( cmdp->cb.data );
-                               cmdp->cb.data = 0;
+                               cmdp->cb.data = NULL;
                                if (n != (int)cmdp->cb.dlen)
                                        return RESP_BAD;
                        } else if (cmdp->cb.cont) {
@@ -849,7 +849,7 @@ get_cmd_result( imap_store_t *ctx, struct imap_cmd *tcmd )
                                if (!strcmp( "NO", arg )) {
                                        if (cmdp->cb.create && cmd && (cmdp->cb.trycreate || !memcmp( cmd, "[TRYCREATE]", 11 ))) { /* SELECT, APPEND or UID COPY */
                                                p = strchr( cmdp->cmd, '"' );
-                                               if (!issue_imap_cmd( ctx, 0, "CREATE \"%.*s\"", strchr( p + 1, '"' ) - p + 1, p )) {
+                                               if (!issue_imap_cmd( ctx, NULL, "CREATE \"%.*s\"", strchr( p + 1, '"' ) - p + 1, p )) {
                                                        resp = RESP_BAD;
                                                        goto normal;
                                                }
@@ -898,7 +898,7 @@ imap_close_server( imap_store_t *ictx )
        imap_t *imap = ictx->imap;
 
        if (imap->buf.sock.fd != -1) {
-               imap_exec( ictx, 0, "LOGOUT" );
+               imap_exec( ictx, NULL, "LOGOUT" );
                close( imap->buf.sock.fd );
        }
        free_list( imap->ns_personal );
@@ -1001,8 +1001,8 @@ imap_open_store( imap_server_conf_t *srvc )
                fprintf( stderr, "IMAP error: unknown greeting response\n" );
                goto bail;
        }
-       parse_response_code( ctx, 0, rsp );
-       if (!imap->caps && imap_exec( ctx, 0, "CAPABILITY" ) != RESP_OK)
+       parse_response_code( ctx, NULL, rsp );
+       if (!imap->caps && imap_exec( ctx, NULL, "CAPABILITY" ) != RESP_OK)
                goto bail;
 
        if (!preauth) {
@@ -1035,7 +1035,7 @@ imap_open_store( imap_server_conf_t *srvc )
                        goto bail;
                }
                warn( "*** IMAP Warning *** Password is being sent in the clear\n" );
-               if (imap_exec( ctx, 0, "LOGIN \"%s\" \"%s\"", srvc->user, srvc->pass ) != RESP_OK) {
+               if (imap_exec( ctx, NULL, "LOGIN \"%s\" \"%s\"", srvc->user, srvc->pass ) != RESP_OK) {
                        fprintf( stderr, "IMAP error: LOGIN failed\n" );
                        goto bail;
                }
@@ -1047,7 +1047,7 @@ imap_open_store( imap_server_conf_t *srvc )
 
   bail:
        imap_close_store( &ctx->gen );
-       return 0;
+       return NULL;
 }
 
 static int
@@ -1202,6 +1202,7 @@ read_message( FILE *f, msg_data_t *msg )
                        p = xrealloc(msg->data, len+1);
                        if (!p)
                                break;
+                       msg->data = p;
                }
                r = fread( &msg->data[msg->len], 1, len - msg->len, f );
                if (r <= 0)
@@ -1310,7 +1311,7 @@ int
 main(int argc, char **argv)
 {
        msg_data_t all_msgs, msg;
-       store_t *ctx = 0;
+       store_t *ctx = NULL;
        int uid = 0;
        int ofs = 0;
        int r;
@@ -1332,6 +1333,12 @@ main(int argc, char **argv)
                return 1;
        }
 
+       total = count_messages( &all_msgs );
+       if (!total) {
+               fprintf(stderr,"no messages to send\n");
+               return 1;
+       }
+
        /* write it to the imap server */
        ctx = imap_open_store( &server );
        if (!ctx) {
@@ -1339,7 +1346,6 @@ main(int argc, char **argv)
                return 1;
        }
 
-       total = count_messages( &all_msgs );
        fprintf( stderr, "sending %d message%s\n", total, (total!=1)?"s":"" );
        ctx->name = imap_folder;
        while (1) {