summaryrefslogtreecommitdiff
path: root/regexp.c
diff options
context:
space:
mode:
authorErik Andersen2000-02-08 19:58:47 +0000
committerErik Andersen2000-02-08 19:58:47 +0000
commite49d5ecbbe51718fa925b6890a735e5937cc2aa2 (patch)
treec90bda10731ad9333ce3b404f993354c9fc104b8 /regexp.c
parentc0bf817bbc5c7867fbe8fb76d5c39f8ee802692f (diff)
downloadbusybox-e49d5ecbbe51718fa925b6890a735e5937cc2aa2.zip
busybox-e49d5ecbbe51718fa925b6890a735e5937cc2aa2.tar.gz
Some formatting updates (ran the code through indent)
-Erik
Diffstat (limited to 'regexp.c')
-rw-r--r--regexp.c602
1 files changed, 258 insertions, 344 deletions
diff --git a/regexp.c b/regexp.c
index 11b46c7..f4a8aa1 100644
--- a/regexp.c
+++ b/regexp.c
@@ -1,3 +1,4 @@
+/* vi: set sw=4 ts=4: */
/* regexp.c */
#include "internal.h"
@@ -17,44 +18,47 @@
*/
extern int find_match(char *haystack, char *needle, int ignoreCase)
{
- int status;
- struct regexp* re;
- re = regcomp( needle);
- status = regexec(re, haystack, FALSE, ignoreCase);
- free( re);
- return( status);
+ int status;
+ struct regexp *re;
+
+ re = regcomp(needle);
+ status = regexec(re, haystack, FALSE, ignoreCase);
+ free(re);
+ return (status);
}
#if defined BB_SED
/* This performs substitutions after a regexp match has been found.
* The new string is returned. It is malloc'ed, and do must be freed. */
-extern int replace_match(char *haystack, char *needle, char *newNeedle, int ignoreCase)
+extern int replace_match(char *haystack, char *needle, char *newNeedle,
+ int ignoreCase)
{
- int status;
- struct regexp* re;
- char *s, buf[BUF_SIZE], *d = buf;
-
- re = regcomp( needle);
- status = regexec(re, haystack, FALSE, ignoreCase);
- if (status==TRUE) {
- s=haystack;
-
- do {
- /* copy stuff from before the match */
- while (s < re->startp[0])
- *d++ = *s++;
- /* substitute for the matched part */
- regsub(re, newNeedle, d);
- s = re->endp[0];
- d += strlen(d);
- } while (regexec(re, s, FALSE, ignoreCase) == TRUE);
- /* copy stuff from after the match */
- while ( (*d++ = *s++) ) {}
- d[0] = '\0';
- strcpy(haystack, buf);
- }
- free( re);
- return( status);
+ int status;
+ struct regexp *re;
+ char *s, buf[BUF_SIZE], *d = buf;
+
+ re = regcomp(needle);
+ status = regexec(re, haystack, FALSE, ignoreCase);
+ if (status == TRUE) {
+ s = haystack;
+
+ do {
+ /* copy stuff from before the match */
+ while (s < re->startp[0])
+ *d++ = *s++;
+ /* substitute for the matched part */
+ regsub(re, newNeedle, d);
+ s = re->endp[0];
+ d += strlen(d);
+ } while (regexec(re, s, FALSE, ignoreCase) == TRUE);
+ /* copy stuff from after the match */
+ while ((*d++ = *s++)) {
+ }
+ d[0] = '\0';
+ strcpy(haystack, buf);
+ }
+ free(re);
+ return (status);
}
#endif
@@ -97,9 +101,10 @@ extern int replace_match(char *haystack, char *needle, char *newNeedle, int igno
-static char *previous; /* the previous regexp, used when null regexp is given */
+static char *previous; /* the previous regexp, used when null regexp is given */
+
#if defined BB_SED
-static char *previous1; /* a copy of the text from the previous substitution for regsub()*/
+static char *previous1; /* a copy of the text from the previous substitution for regsub() */
#endif
@@ -116,27 +121,28 @@ static char *previous1; /* a copy of the text from the previous substitution for
#define GET_META(s) (*(s) == META ? INT_META(*++(s)) : *s)
/* These are the internal codes used for each type of meta-character */
-#define M_BEGLINE 256 /* internal code for ^ */
-#define M_ENDLINE 257 /* internal code for $ */
-#define M_BEGWORD 258 /* internal code for \< */
-#define M_ENDWORD 259 /* internal code for \> */
-#define M_ANY 260 /* internal code for . */
-#define M_SPLAT 261 /* internal code for * */
-#define M_PLUS 262 /* internal code for \+ */
-#define M_QMARK 263 /* internal code for \? */
+#define M_BEGLINE 256 /* internal code for ^ */
+#define M_ENDLINE 257 /* internal code for $ */
+#define M_BEGWORD 258 /* internal code for \< */
+#define M_ENDWORD 259 /* internal code for \> */
+#define M_ANY 260 /* internal code for . */
+#define M_SPLAT 261 /* internal code for * */
+#define M_PLUS 262 /* internal code for \+ */
+#define M_QMARK 263 /* internal code for \? */
#define M_CLASS(n) (264+(n)) /* internal code for [] */
#define M_START(n) (274+(n)) /* internal code for \( */
#define M_END(n) (284+(n)) /* internal code for \) */
/* These are used during compilation */
-static int class_cnt; /* used to assign class IDs */
-static int start_cnt; /* used to assign start IDs */
-static int end_stk[NSUBEXP];/* used to assign end IDs */
-static int end_sp;
-static char *retext; /* points to the text being compiled */
+static int class_cnt; /* used to assign class IDs */
+static int start_cnt; /* used to assign start IDs */
+static int end_stk[NSUBEXP]; /* used to assign end IDs */
+static int end_sp;
+static char *retext; /* points to the text being compiled */
/* error-handling stuff */
-jmp_buf errorhandler;
+jmp_buf errorhandler;
+
#define FAIL(why) do {fprintf(stderr, why); longjmp(errorhandler, 1);} while (0)
@@ -145,68 +151,56 @@ jmp_buf errorhandler;
/* This function builds a bitmap for a particular class */
/* text -- start of the class */
/* bmap -- the bitmap */
-static char *makeclass(char* text, char* bmap)
+static char *makeclass(char *text, char *bmap)
{
- int i;
- int complement = 0;
+ int i;
+ int complement = 0;
/* zero the bitmap */
- for (i = 0; bmap && i < 32; i++)
- {
+ for (i = 0; bmap && i < 32; i++) {
bmap[i] = 0;
}
/* see if we're going to complement this class */
- if (*text == '^')
- {
+ if (*text == '^') {
text++;
complement = 1;
}
/* add in the characters */
- while (*text && *text != ']')
- {
+ while (*text && *text != ']') {
/* is this a span of characters? */
- if (text[1] == '-' && text[2])
- {
+ if (text[1] == '-' && text[2]) {
/* spans can't be backwards */
- if (text[0] > text[2])
- {
+ if (text[0] > text[2]) {
FAIL("Backwards span in []");
}
/* add each character in the span to the bitmap */
- for (i = text[0]; bmap && i <= text[2]; i++)
- {
+ for (i = text[0]; bmap && i <= text[2]; i++) {
bmap[i >> 3] |= (1 << (i & 7));
}
/* move past this span */
text += 3;
- }
- else
- {
+ } else {
/* add this single character to the span */
i = *text++;
- if (bmap)
- {
+ if (bmap) {
bmap[i >> 3] |= (1 << (i & 7));
}
}
}
/* make sure the closing ] is missing */
- if (*text++ != ']')
- {
+ if (*text++ != ']') {
FAIL("] missing");
}
/* if we're supposed to complement this class, then do so */
- if (complement && bmap)
- {
- for (i = 0; i < 32; i++)
- {
+ if (complement && bmap) {
+ for (i = 0; i < 32; i++) {
bmap[i] = ~bmap[i];
}
}
@@ -223,105 +217,92 @@ static char *makeclass(char* text, char* bmap)
* character-class text is skipped.
*/
static int gettoken(sptr, re)
- char **sptr;
- regexp *re;
+char **sptr;
+regexp *re;
{
- int c;
+ int c;
c = **sptr;
++*sptr;
- if (c == '\\')
- {
+ if (c == '\\') {
c = **sptr;
++*sptr;
- switch (c)
- {
- case '<':
+ switch (c) {
+ case '<':
return M_BEGWORD;
- case '>':
+ case '>':
return M_ENDWORD;
- case '(':
- if (start_cnt >= NSUBEXP)
- {
+ case '(':
+ if (start_cnt >= NSUBEXP) {
FAIL("Too many \\(s");
}
end_stk[end_sp++] = start_cnt;
return M_START(start_cnt++);
- case ')':
- if (end_sp <= 0)
- {
+ case ')':
+ if (end_sp <= 0) {
FAIL("Mismatched \\)");
}
return M_END(end_stk[--end_sp]);
- case '*':
+ case '*':
return M_SPLAT;
- case '.':
+ case '.':
return M_ANY;
- case '+':
+ case '+':
return M_PLUS;
- case '?':
+ case '?':
return M_QMARK;
- default:
+ default:
return c;
}
- }
- else {
- switch (c)
- {
- case '^':
- if (*sptr == retext + 1)
- {
+ } else {
+ switch (c) {
+ case '^':
+ if (*sptr == retext + 1) {
return M_BEGLINE;
}
return c;
- case '$':
- if (!**sptr)
- {
+ case '$':
+ if (!**sptr) {
return M_ENDLINE;
}
return c;
- case '.':
+ case '.':
return M_ANY;
- case '*':
+ case '*':
return M_SPLAT;
- case '[':
+ case '[':
/* make sure we don't have too many classes */
- if (class_cnt >= 10)
- {
+ if (class_cnt >= 10) {
FAIL("Too many []s");
}
/* process the character list for this class */
- if (re)
- {
+ if (re) {
/* generate the bitmap for this class */
*sptr = makeclass(*sptr, re->program + 1 + 32 * class_cnt);
- }
- else
- {
+ } else {
/* skip to end of the class */
- *sptr = makeclass(*sptr, (char *)0);
+ *sptr = makeclass(*sptr, (char *) 0);
}
return M_CLASS(class_cnt++);
- default:
+ default:
return c;
}
}
- /*NOTREACHED*/
-}
+ /*NOTREACHED*/}
@@ -331,28 +312,22 @@ static int gettoken(sptr, re)
* about catching syntax errors; that is done in a later pass.
*/
static unsigned calcsize(text)
- char *text;
+char *text;
{
- unsigned size;
- int token;
+ unsigned size;
+ int token;
retext = text;
class_cnt = 0;
start_cnt = 1;
end_sp = 0;
size = 5;
- while ((token = gettoken(&text, (regexp *)0)) != 0)
- {
- if (IS_CLASS(token))
- {
+ while ((token = gettoken(&text, (regexp *) 0)) != 0) {
+ if (IS_CLASS(token)) {
size += 34;
- }
- else if (IS_META(token))
- {
+ } else if (IS_META(token)) {
size += 2;
- }
- else
- {
+ } else {
size++;
}
}
@@ -369,26 +344,23 @@ static unsigned calcsize(text)
* known to represent a single character. It returns 0 if they match, or
* 1 if they don't.
*/
-static int match1(regexp* re, char ch, int token, int ignoreCase)
+static int match1(regexp * re, char ch, int token, int ignoreCase)
{
- if (!ch)
- {
+ if (!ch) {
/* the end of a line can't match any RE of width 1 */
return 1;
}
- if (token == M_ANY)
- {
+ if (token == M_ANY) {
return 0;
- }
- else if (IS_CLASS(token))
- {
- if (re->program[1 + 32 * (token - M_CLASS(0)) + (ch >> 3)] & (1 << (ch & 7)))
+ } else if (IS_CLASS(token)) {
+ if (re->
+ program[1 + 32 * (token - M_CLASS(0)) +
+ (ch >> 3)] & (1 << (ch & 7)))
return 0;
}
//fprintf(stderr, "match1: ch='%c' token='%c': ", ch, token);
if (ch == token
- || (ignoreCase==TRUE && tolower(ch) == tolower(token)))
- {
+ || (ignoreCase == TRUE && tolower(ch) == tolower(token))) {
//fprintf(stderr, "match\n");
return 0;
}
@@ -406,65 +378,63 @@ static int match1(regexp* re, char ch, int token, int ignoreCase)
/* str -- the string */
/* prog -- a portion of re->program, an compiled RE */
/* here -- a portion of str, the string to compare it to */
-static int match(regexp* re, char* str, char* prog, char* here, int ignoreCase)
+static int match(regexp * re, char *str, char *prog, char *here,
+ int ignoreCase)
{
- int token;
- int nmatched;
- int closure;
-
- for (token = GET_META(prog); !IS_CLOSURE(token); prog++, token = GET_META(prog))
- {
- switch (token)
- {
- /*case M_BEGLINE: can't happen; re->bol is used instead */
- case M_ENDLINE:
+ int token;
+ int nmatched;
+ int closure;
+
+ for (token = GET_META(prog); !IS_CLOSURE(token);
+ prog++, token = GET_META(prog)) {
+ switch (token) {
+ /*case M_BEGLINE: can't happen; re->bol is used instead */
+ case M_ENDLINE:
if (*here)
return 1;
break;
- case M_BEGWORD:
+ case M_BEGWORD:
if (here != str &&
- (here[-1] == '_' ||
- (isascii(here[-1]) && isalnum(here[-1]))))
- return 1;
+ (here[-1] == '_' ||
+ (isascii(here[-1]) && isalnum(here[-1])))) return 1;
break;
- case M_ENDWORD:
+ case M_ENDWORD:
if ((here[0] == '_' || isascii(here[0])) && isalnum(here[0]))
return 1;
break;
- case M_START(0):
- case M_START(1):
- case M_START(2):
- case M_START(3):
- case M_START(4):
- case M_START(5):
- case M_START(6):
- case M_START(7):
- case M_START(8):
- case M_START(9):
- re->startp[token - M_START(0)] = (char *)here;
+ case M_START(0):
+ case M_START(1):
+ case M_START(2):
+ case M_START(3):
+ case M_START(4):
+ case M_START(5):
+ case M_START(6):
+ case M_START(7):
+ case M_START(8):
+ case M_START(9):
+ re->startp[token - M_START(0)] = (char *) here;
break;
- case M_END(0):
- case M_END(1):
- case M_END(2):
- case M_END(3):
- case M_END(4):
- case M_END(5):
- case M_END(6):
- case M_END(7):
- case M_END(8):
- case M_END(9):
- re->endp[token - M_END(0)] = (char *)here;
- if (token == M_END(0))
- {
+ case M_END(0):
+ case M_END(1):
+ case M_END(2):
+ case M_END(3):
+ case M_END(4):
+ case M_END(5):
+ case M_END(6):
+ case M_END(7):
+ case M_END(8):
+ case M_END(9):
+ re->endp[token - M_END(0)] = (char *) here;
+ if (token == M_END(0)) {
return 0;
}
break;
- default: /* literal, M_CLASS(n), or M_ANY */
+ default: /* literal, M_CLASS(n), or M_ANY */
if (match1(re, *here, token, ignoreCase) != 0)
return 1;
here++;
@@ -482,14 +452,12 @@ static int match(regexp* re, char* str, char* prog, char* here, int ignoreCase)
/* step 2: see how many times we can match that token against the string */
for (nmatched = 0;
- (closure != M_QMARK || nmatched < 1) && *here && match1(re, *here, token, ignoreCase) == 0;
- nmatched++, here++)
- {
+ (closure != M_QMARK || nmatched < 1) && *here
+ && match1(re, *here, token, ignoreCase) == 0; nmatched++, here++) {
}
/* step 3: try to match the remainder, and back off if it doesn't */
- while (nmatched >= 0 && match(re, str, prog, here, ignoreCase) != 0)
- {
+ while (nmatched >= 0 && match(re, str, prog, here, ignoreCase) != 0) {
nmatched--;
here--;
}
@@ -502,41 +470,36 @@ static int match(regexp* re, char* str, char* prog, char* here, int ignoreCase)
/* This function compiles a regexp. */
-extern regexp *regcomp(char* text)
+extern regexp *regcomp(char *text)
{
- int needfirst;
- unsigned size;
- int token;
- int peek;
- char *build;
- regexp *re; // Ignore compiler whining. If we longjmp, we don't use re anymore.
+ int needfirst;
+ unsigned size;
+ int token;
+ int peek;
+ char *build;
+ regexp *re; // Ignore compiler whining. If we longjmp, we don't use re anymore.
/* prepare for error handling */
- re = (regexp *)0;
- if (setjmp(errorhandler))
- {
- if (re)
- {
+ re = (regexp *) 0;
+ if (setjmp(errorhandler)) {
+ if (re) {
free(re);
}
- return (regexp *)0;
+ return (regexp *) 0;
}
/* if an empty regexp string was given, use the previous one */
- if (*text == 0)
- {
- if (!previous)
- {
+ if (*text == 0) {
+ if (!previous) {
FAIL("No previous RE");
}
text = previous;
- }
- else /* non-empty regexp given, so remember it */
- {
+ } else { /* non-empty regexp given, so remember it */
+
if (previous)
free(previous);
- previous = (char *)malloc((unsigned)(strlen(text) + 1));
+ previous = (char *) malloc((unsigned) (strlen(text) + 1));
if (previous)
strcpy(previous, text);
}
@@ -547,19 +510,17 @@ extern regexp *regcomp(char* text)
end_sp = 0;
retext = text;
size = calcsize(text) + sizeof(regexp);
- re = (regexp *)malloc((unsigned)size);
+ re = (regexp *) malloc((unsigned) size);
- if (!re)
- {
+ if (!re) {
FAIL("Not enough memory for this RE");
}
/* compile it */
build = &re->program[1 + 32 * class_cnt];
re->program[0] = class_cnt;
- for (token = 0; token < NSUBEXP; token++)
- {
- re->startp[token] = re->endp[token] = (char *)0;
+ for (token = 0; token < NSUBEXP; token++) {
+ re->startp[token] = re->endp[token] = (char *) 0;
}
re->first = 0;
re->bol = 0;
@@ -570,76 +531,60 @@ extern regexp *regcomp(char* text)
end_sp = 0;
retext = text;
for (token = M_START(0), peek = gettoken(&text, re);
- token;
- token = peek, peek = gettoken(&text, re))
- {
+ token; token = peek, peek = gettoken(&text, re)) {
/* special processing for the closure operator */
- if (IS_CLOSURE(peek))
- {
+ if (IS_CLOSURE(peek)) {
/* detect misuse of closure operator */
- if (IS_START(token))
- {
+ if (IS_START(token)) {
FAIL("* or \\+ or \\? follows nothing");
}
- else if (IS_META(token) && token != M_ANY && !IS_CLASS(token))
- {
- FAIL("* or \\+ or \\? can only follow a normal character or . or []");
+ else if (IS_META(token) && token != M_ANY
+ && !IS_CLASS(token)) {
+ FAIL
+ ("* or \\+ or \\? can only follow a normal character or . or []");
}
/* it is okay -- make it prefix instead of postfix */
ADD_META(build, peek);
/* take care of "needfirst" - is this the first char? */
- if (needfirst && peek == M_PLUS && !IS_META(token))
- {
+ if (needfirst && peek == M_PLUS && !IS_META(token)) {
re->first = token;
}
needfirst = 0;
/* we used "peek" -- need to refill it */
peek = gettoken(&text, re);
- if (IS_CLOSURE(peek))
- {
+ if (IS_CLOSURE(peek)) {
FAIL("* or \\+ or \\? doubled up");
}
- }
- else if (!IS_META(token))
- {
+ } else if (!IS_META(token)) {
/* normal char is NOT argument of closure */
- if (needfirst)
- {
+ if (needfirst) {
re->first = token;
needfirst = 0;
}
re->minlen++;
- }
- else if (token == M_ANY || IS_CLASS(token))
- {
+ } else if (token == M_ANY || IS_CLASS(token)) {
/* . or [] is NOT argument of closure */
needfirst = 0;
re->minlen++;
}
/* the "token" character is not closure -- process it normally */
- if (token == M_BEGLINE)
- {
+ if (token == M_BEGLINE) {
/* set the BOL flag instead of storing M_BEGLINE */
re->bol = 1;
- }
- else if (IS_META(token))
- {
+ } else if (IS_META(token)) {
ADD_META(build, token);
- }
- else
- {
+ } else {
*build++ = token;
}
}
/* end it with a \) which MUST MATCH the opening \( */
ADD_META(build, M_END(0));
- if (end_sp > 0)
- {
+ if (end_sp > 0) {
FAIL("Not enough \\)s");
}
@@ -654,15 +599,14 @@ extern regexp *regcomp(char* text)
/* str -- the string to search through */
/* bol -- does str start at the beginning of a line? (boolean) */
/* ignoreCase -- ignoreCase or not */
-extern int regexec(struct regexp* re, char* str, int bol, int ignoreCase)
+extern int regexec(struct regexp *re, char *str, int bol, int ignoreCase)
{
- char *prog; /* the entry point of re->program */
- int len; /* length of the string */
- char *here;
+ char *prog; /* the entry point of re->program */
+ int len; /* length of the string */
+ char *here;
/* if must start at the beginning of a line, and this isn't, then fail */
- if (re->bol && bol==TRUE)
- {
+ if (re->bol && bol == TRUE) {
return FALSE;
}
@@ -670,35 +614,26 @@ extern int regexec(struct regexp* re, char* str, int bol, int ignoreCase)
prog = re->program + 1 + 32 * re->program[0];
/* search for the RE in the string */
- if (re->bol)
- {
+ if (re->bol) {
/* must occur at BOL */
- if ((re->first
- && match1(re, *(char *)str, re->first, ignoreCase))/* wrong first letter? */
- || len < re->minlen /* not long enough? */
- || match(re, (char *)str, prog, str, ignoreCase)) /* doesn't match? */
- return FALSE; /* THEN FAIL! */
- }
- else if (ignoreCase == FALSE)
- {
+ if ((re->first && match1(re, *(char *) str, re->first, ignoreCase)) /* wrong first letter? */
+ ||len < re->minlen /* not long enough? */
+ || match(re, (char *) str, prog, str, ignoreCase)) /* doesn't match? */
+ return FALSE; /* THEN FAIL! */
+ } else if (ignoreCase == FALSE) {
/* can occur anywhere in the line, noignorecase */
- for (here = (char *)str;
- (re->first && re->first != *here)
- || match(re, (char *)str, prog, here, ignoreCase);
- here++, len--)
- {
+ for (here = (char *) str; (re->first && re->first != *here)
+ || match(re, (char *) str, prog, here, ignoreCase);
+ here++, len--) {
if (len < re->minlen)
return FALSE;
}
- }
- else
- {
+ } else {
/* can occur anywhere in the line, ignorecase */
- for (here = (char *)str;
- (re->first && match1(re, *here, (int)re->first, ignoreCase))
- || match(re, (char *)str, prog, here, ignoreCase);
- here++, len--)
- {
+ for (here = (char *) str;
+ (re->first && match1(re, *here, (int) re->first, ignoreCase))
+ || match(re, (char *) str, prog, here, ignoreCase);
+ here++, len--) {
if (len < re->minlen)
return FALSE;
}
@@ -713,82 +648,72 @@ extern int regexec(struct regexp* re, char* str, int bol, int ignoreCase)
#if defined BB_SED
/* This performs substitutions after a regexp match has been found. */
-extern void regsub(regexp* re, char* src, char* dst)
+extern void regsub(regexp * re, char *src, char *dst)
{
- char *cpy;
- char *end;
- char c;
- char *start;
- int mod;
+ char *cpy;
+ char *end;
+ char c;
+ char *start;
+ int mod;
mod = 0;
start = src;
- while ((c = *src++) != '\0')
- {
+ while ((c = *src++) != '\0') {
/* recognize any meta characters */
- if (c == '&')
- {
+ if (c == '&') {
cpy = re->startp[0];
end = re->endp[0];
- }
- else if (c == '~')
- {
+ } else if (c == '~') {
cpy = previous1;
if (cpy)
end = cpy + strlen(cpy);
- }
- else
- if (c == '\\')
- {
+ } else if (c == '\\') {
c = *src++;
- switch (c)
- {
- case '0':
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- case '8':
- case '9':
+ switch (c) {
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
/* \0 thru \9 mean "copy subexpression" */
c -= '0';
- cpy = re->startp[(int)c];
- end = re->endp[(int)c];
+ cpy = re->startp[(int) c];
+ end = re->endp[(int) c];
break;
- case 'U':
- case 'u':
- case 'L':
- case 'l':
+ case 'U':
+ case 'u':
+ case 'L':
+ case 'l':
/* \U and \L mean "convert to upper/lowercase" */
mod = c;
continue;
- case 'E':
- case 'e':
+ case 'E':
+ case 'e':
/* \E ends the \U or \L */
mod = 0;
continue;
- case '&':
+ case '&':
/* "\&" means "original text" */
*dst++ = c;
continue;
- case '~':
+ case '~':
/* "\~" means "previous text, if any" */
*dst++ = c;
continue;
- default:
+ default:
/* ordinary char preceded by backslash */
*dst++ = c;
continue;
}
- }
- else
- {
+ } else {
/* ordinary character, so just copy it */
*dst++ = c;
continue;
@@ -804,46 +729,37 @@ extern void regsub(regexp* re, char* src, char* dst)
continue;
/* copy over a portion of the original */
- while (cpy < end)
- {
- switch (mod)
- {
- case 'U':
- case 'u':
+ while (cpy < end) {
+ switch (mod) {
+ case 'U':
+ case 'u':
/* convert to uppercase */
- if (isascii(*cpy) && islower(*cpy))
- {
+ if (isascii(*cpy) && islower(*cpy)) {
*dst++ = toupper(*cpy);
cpy++;
- }
- else
- {
+ } else {
*dst++ = *cpy++;
}
break;
- case 'L':
- case 'l':
+ case 'L':
+ case 'l':
/* convert to lowercase */
- if (isascii(*cpy) && isupper(*cpy))
- {
+ if (isascii(*cpy) && isupper(*cpy)) {
*dst++ = tolower(*cpy);
cpy++;
- }
- else
- {
+ } else {
*dst++ = *cpy++;
}
break;
- default:
+ default:
/* copy without any conversion */
*dst++ = *cpy++;
}
/* \u and \l end automatically after the first char */
- if (mod && (mod == 'u' || mod == 'l'))
- {
+ if (mod && (mod == 'u' || mod == 'l')) {
mod = 0;
}
}
@@ -853,12 +769,10 @@ extern void regsub(regexp* re, char* src, char* dst)
/* remember what text we inserted this time */
if (previous1)
free(previous1);
- previous1 = (char *)malloc((unsigned)(strlen(start) + 1));
+ previous1 = (char *) malloc((unsigned) (strlen(start) + 1));
if (previous1)
strcpy(previous1, start);
}
#endif
-#endif /* BB_REGEXP */
-
-
+#endif /* BB_REGEXP */