use skip_whitespace where appropriate

git-svn-id: svn://busybox.net/trunk/busybox@16435 69ca8d6d-28ef-0310-b511-8ec308f3f277

8 files changed, 98 insertions, 105 deletions

diff --git a/editors/awk.c b/editors/awk.c
index e91c37678..b776dd796 100644
--- a/editors/awk.c
+++ b/editors/awk.c
@@ -1470,7 +1470,7 @@ static int awk_split(char *s, node *spl, char **slist)
                 }
         } else {                                /* space split */
                 while (*s) {
-                        while (isspace(*s)) s++;
+                        s = skip_whitespace(s);
                         if (! *s) break;
                         n++;
                         while (*s && !isspace(*s))
diff --git a/editors/sed.c b/editors/sed.c
index 30f35ce22..e26141571 100644
--- a/editors/sed.c
+++ b/editors/sed.c
@@ -63,29 +63,29 @@
 
 /* Each sed command turns into one of these structures. */
 typedef struct sed_cmd_s {
-    /* Ordered by alignment requirements: currently 36 bytes on x86 */
+        /* Ordered by alignment requirements: currently 36 bytes on x86 */
 
-    /* address storage */
-    regex_t *beg_match; /* sed -e '/match/cmd' */
-    regex_t *end_match; /* sed -e '/match/,/end_match/cmd' */
-    regex_t *sub_match; /* For 's/sub_match/string/' */
-    int beg_line;               /* 'sed 1p'   0 == apply commands to all lines */
-    int end_line;               /* 'sed 1,3p' 0 == one line only. -1 = last line ($) */
+        /* address storage */
+        regex_t *beg_match;     /* sed -e '/match/cmd' */
+        regex_t *end_match;     /* sed -e '/match/,/end_match/cmd' */
+        regex_t *sub_match;     /* For 's/sub_match/string/' */
+        int beg_line;           /* 'sed 1p'   0 == apply commands to all lines */
+        int end_line;           /* 'sed 1,3p' 0 == one line only. -1 = last line ($) */
 
-    FILE *file;                 /* File (sw) command writes to, -1 for none. */
-    char *string;               /* Data string for (saicytb) commands. */
+        FILE *file;             /* File (sw) command writes to, -1 for none. */
+        char *string;           /* Data string for (saicytb) commands. */
 
-    unsigned short which_match;         /* (s) Which match to replace (0 for all) */
+        unsigned short which_match;     /* (s) Which match to replace (0 for all) */
 
-    /* Bitfields (gcc won't group them if we don't) */
-    unsigned int invert:1;                      /* the '!' after the address */
-    unsigned int in_match:1;            /* Next line also included in match? */
-    unsigned int no_newline:1;          /* Last line written by (sw) had no '\n' */
-    unsigned int sub_p:1;                       /* (s) print option */
+        /* Bitfields (gcc won't group them if we don't) */
+        unsigned int invert:1;          /* the '!' after the address */
+        unsigned int in_match:1;        /* Next line also included in match? */
+        unsigned int no_newline:1;      /* Last line written by (sw) had no '\n' */
+        unsigned int sub_p:1;           /* (s) print option */
 
-    /* GENERAL FIELDS */
-    char cmd;                           /* The command char: abcdDgGhHilnNpPqrstwxy:={} */
-    struct sed_cmd_s *next;     /* Next command (linked list, NULL terminated) */
+        /* GENERAL FIELDS */
+        char cmd;               /* The command char: abcdDgGhHilnNpPqrstwxy:={} */
+        struct sed_cmd_s *next; /* Next command (linked list, NULL terminated) */
 } sed_cmd_t;
 
 static const char *const semicolon_whitespace = "; \n\r\t\v";
@@ -162,7 +162,7 @@ void sed_free_and_close_stuff(void)
 
 static void cleanup_outname(void)
 {
-  if(bbg.outname) unlink(bbg.outname);
+        if(bbg.outname) unlink(bbg.outname);
 }
 
 /* strdup, replacing "\n" with '\n', and "\delimiter" with 'delimiter' */
@@ -343,36 +343,36 @@ static int parse_subst_cmd(sed_cmd_t *sed_cmd, char *substr)
                 if(isspace(substr[idx])) continue;
 
                 switch (substr[idx]) {
-                        /* Replace all occurrences */
-                        case 'g':
-                                if (match[0] != '^') sed_cmd->which_match = 0;
-                                break;
-                        /* Print pattern space */
-                        case 'p':
-                                sed_cmd->sub_p = 1;
-                                break;
-                        /* Write to file */
-                        case 'w':
-                        {
-                                char *temp;
-                                idx+=parse_file_cmd(sed_cmd,substr+idx,&temp);
+                /* Replace all occurrences */
+                case 'g':
+                        if (match[0] != '^') sed_cmd->which_match = 0;
+                        break;
+                /* Print pattern space */
+                case 'p':
+                        sed_cmd->sub_p = 1;
+                        break;
+                /* Write to file */
+                case 'w':
+                {
+                        char *temp;
+                        idx+=parse_file_cmd(sed_cmd,substr+idx,&temp);
 
-                                break;
-                        }
-                        /* Ignore case (gnu exension) */
-                        case 'I':
-                                cflags |= REG_ICASE;
-                                break;
-                        /* Comment */
-                        case '#':
-                                while(substr[++idx]);
-                                /* Fall through */
-                        /* End of command */
-                        case ';':
-                        case '}':
-                                goto out;
-                        default:
-                                bb_error_msg_and_die("bad option in substitution expression");
+                        break;
+                }
+                /* Ignore case (gnu exension) */
+                case 'I':
+                        cflags |= REG_ICASE;
+                        break;
+                /* Comment */
+                case '#':
+                        while(substr[++idx]);
+                        /* Fall through */
+                /* End of command */
+                case ';':
+                case '}':
+                        goto out;
+                default:
+                        bb_error_msg_and_die("bad option in substitution expression");
                 }
         }
 out:
@@ -420,7 +420,7 @@ static char *parse_cmd_args(sed_cmd_t *sed_cmd, char *cmdstr)
         } else if (strchr(":btT", sed_cmd->cmd)) {
                 int length;
 
-                while(isspace(*cmdstr)) cmdstr++;
+                cmdstr = skip_whitespace(cmdstr);
                 length = strcspn(cmdstr, semicolon_whitespace);
                 if (length) {
                         sed_cmd->string = xstrndup(cmdstr, length);
@@ -517,7 +517,7 @@ static void add_cmd(char *cmdstr)
                 }
 
                 /* skip whitespace before the command */
-                while (isspace(*cmdstr)) cmdstr++;
+                cmdstr = skip_whitespace(cmdstr);
 
                 /* Check for inversion flag */
                 if (*cmdstr == '!') {
@@ -525,7 +525,7 @@ static void add_cmd(char *cmdstr)
                         cmdstr++;
 
                         /* skip whitespace before the command */
-                        while (isspace(*cmdstr)) cmdstr++;
+                        cmdstr = skip_whitespace(cmdstr);
                 }
 
                 /* last part (mandatory) will be a command */
@@ -724,7 +724,7 @@ static int puts_maybe_newline(char *s, FILE *file, int missing_newline, int no_n
         fputs(s,file);
         if(!no_newline) fputc('\n',file);
 
-    if(ferror(file)) {
+        if(ferror(file)) {
                 xfunc_error_retval = 4;  /* It's what gnu sed exits with... */
                 bb_error_msg_and_die(bb_msg_write_error);
         }
@@ -1167,40 +1167,43 @@ int sed_main(int argc, char **argv)
                 FILE *file;
 
                 for (i = optind; i < argc; i++) {
+                        struct stat statbuf;
+                        int nonstdoutfd;
+
                         if(!strcmp(argv[i], "-") && !bbg.in_place) {
                                 add_input_file(stdin);
                                 process_files();
-                        } else {
-                                file = bb_wfopen(argv[i], "r");
-                                if (file) {
-                                        if(bbg.in_place) {
-                                                struct stat statbuf;
-                                                int nonstdoutfd;
-
-                                                bbg.outname=xstrndup(argv[i],strlen(argv[i])+6);
-                                                strcat(bbg.outname,"XXXXXX");
-                                                if(-1==(nonstdoutfd=mkstemp(bbg.outname)))
-                                                        bb_error_msg_and_die("no temp file");
-                                                bbg.nonstdout=fdopen(nonstdoutfd,"w");
-
-                                                /* Set permissions of output file */
-
-                                                fstat(fileno(file),&statbuf);
-                                                fchmod(nonstdoutfd,statbuf.st_mode);
-                                                add_input_file(file);
-                                                process_files();
-                                                fclose(bbg.nonstdout);
-
-                                                bbg.nonstdout=stdout;
-                                                unlink(argv[i]);
-                                                rename(bbg.outname,argv[i]);
-                                                free(bbg.outname);
-                                                bbg.outname=0;
-                                        } else add_input_file(file);
-                                } else {
-                                        status = EXIT_FAILURE;
-                                }
+                                continue;
                         }
+                        file = bb_wfopen(argv[i], "r");
+                        if (!file) {
+                                status = EXIT_FAILURE;
+                                continue;
+                        }
+                        if(!bbg.in_place) {
+                                add_input_file(file);
+                                continue;
+                        }
+
+                        bbg.outname=xstrndup(argv[i],strlen(argv[i])+6);
+                        strcat(bbg.outname,"XXXXXX");
+                        if(-1==(nonstdoutfd=mkstemp(bbg.outname)))
+                                bb_error_msg_and_die("no temp file");
+                        bbg.nonstdout=fdopen(nonstdoutfd,"w");
+
+                        /* Set permissions of output file */
+
+                        fstat(fileno(file),&statbuf);
+                        fchmod(nonstdoutfd,statbuf.st_mode);
+                        add_input_file(file);
+                        process_files();
+                        fclose(bbg.nonstdout);
+
+                        bbg.nonstdout=stdout;
+                        unlink(argv[i]);
+                        rename(bbg.outname,argv[i]);
+                        free(bbg.outname);
+                        bbg.outname=0;
                 }
                 if(bbg.input_file_count>bbg.current_input_file) process_files();
         }
diff --git a/miscutils/dc.c b/miscutils/dc.c
index fd5390143..7b6405754 100644
--- a/miscutils/dc.c
+++ b/miscutils/dc.c
@@ -179,10 +179,10 @@ static void stack_machine(const char *argument)
  */
 static char *get_token(char **buffer)
 {
-        char *start   = NULL;
-        char *current = *buffer;
+        char *start = NULL;
+        char *current;
 
-        while (isspace(*current)) { current++; }
+        current = skip_whitespace(*buffer);
         if (*current != 0) {
                 start = current;
                 while (!isspace(*current) && *current != 0) { current++; }
diff --git a/modutils/modprobe.c b/modutils/modprobe.c
index ba24791f9..5d62ae5df 100644
--- a/modutils/modprobe.c
+++ b/modutils/modprobe.c
@@ -76,15 +76,13 @@ static int parse_tag_value ( char *buffer, char **ptag, char **pvalue )
 {
         char *tag, *value;
 
-        while ( isspace ( *buffer ))
-                buffer++;
+        buffer = skip_whitespace ( buffer );
         tag = value = buffer;
         while ( !isspace ( *value ))
                 if (!*value) return 0;
                 else value++;
         *value++ = 0;
-        while ( isspace ( *value ))
-                value++;
+        value = skip_whitespace ( value );
         if (!*value) return 0;
 
         *ptag = tag;
@@ -311,11 +309,9 @@ static void include_conf ( struct dep_t **first, struct dep_t **current, char *b
                                 }
                         }
                         else if (( strncmp ( buffer, "include", 7 ) == 0 ) && isspace ( buffer [7] )) {
+                                int fdi; char *filename;
 
-                                int fdi; char *filename = buffer + 8;
-
-                                while ( isspace ( *filename ))
-                                        filename++;
+                                filename = skip_whitespace ( buffer + 8 );
 
                                 if (( fdi = open ( filename, O_RDONLY )) >= 0 ) {
                                         include_conf(first, current, buffer, buflen, fdi);
diff --git a/networking/ifupdown.c b/networking/ifupdown.c
index 45407f9f4..ede2f8997 100644
--- a/networking/ifupdown.c
+++ b/networking/ifupdown.c
@@ -572,10 +572,7 @@ static char *next_word(char **buf)
         }
 
         /* Skip over leading whitespace */
-        word = *buf;
-        while (isspace(*word)) {
-                ++word;
-        }
+        word = skip_whitespace(*buf);
 
         /* Skip over comments */
         if (*word == '#') {
@@ -712,9 +709,7 @@ static struct interfaces_file_t *read_interfaces(const char *filename)
                         }
 
                         /* ship any trailing whitespace */
-                        while (isspace(*buf_ptr)) {
-                                ++buf_ptr;
-                        }
+                        buf_ptr = skip_whitespace(buf_ptr);
 
                         if (buf_ptr[0] != '\0') {
                                 bb_error_msg("too many parameters \"%s\"", buf);
diff --git a/networking/wget.c b/networking/wget.c
index a0d3e15e8..090b58d9a 100644
--- a/networking/wget.c
+++ b/networking/wget.c
@@ -302,7 +302,7 @@ int wget_main(int argc, char **argv)
 
                         s = buf;
                         while (*s != '\0' && !isspace(*s)) ++s;
-                        while (isspace(*s)) ++s;
+                        s = skip_whitespace(s);
                         // FIXME: no error check
                         // xatou wouldn't work: "200 OK"
                         status = atoi(s);
diff --git a/shell/bbsh.c b/shell/bbsh.c
index 77e186d35..791983a3a 100644
--- a/shell/bbsh.c
+++ b/shell/bbsh.c
@@ -119,7 +119,7 @@ static char *parse_pipeline(char *cmdline, struct pipeline *line)
                 char *end;
 
                 // Skip leading whitespace and detect end of line.
-                while (isspace(*start)) start++;
+                start = skip_whitespace(start);
                 if (!*start || *start=='#') {
                         if (ENABLE_BBSH_JOBCTL) line->cmdlinelen = start-cmdline;
                         return 0;
diff --git a/util-linux/mount.c b/util-linux/mount.c
index 5ced48fea..2c5e23177 100644
--- a/util-linux/mount.c
+++ b/util-linux/mount.c
@@ -203,8 +203,7 @@ static llist_t *get_block_backed_filesystems(void)
                 while ((buf = xmalloc_getline(f)) != 0) {
                         if (!strncmp(buf, "nodev", 5) && isspace(buf[5]))
                                 continue;
-                        fs = buf;
-                        while (isspace(*fs)) fs++;
+                        fs = skip_whitespace(buf);
                         if (*fs=='#' || *fs=='*' || !*fs) continue;
 
                         llist_add_to_end(&list, xstrdup(fs));