Applied patch from Mark Ferrell <mferrell@mvista.com> to use the 'p' option in
substitution expressions.
This commit is contained in:
Mark Whitley
parent
dc746169cf
commit
0e4cec0be8
@ -217,6 +217,9 @@
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// Enable support for "--exclude" for excluding files
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#define BB_FEATURE_TAR_EXCLUDE
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//
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// Enable support for s///p pattern matching
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#define BB_FEATURE_SED_PATTERN_SPACE
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//
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//// Enable reverse sort
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#define BB_FEATURE_SORT_REVERSE
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//
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@ -63,6 +63,11 @@ extern char *optarg; /* ditto */
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/* options */
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static int be_quiet = 0;
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static const int SUB_G = 1 << 0;
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#ifdef BB_FEATURE_SED_PATTERN_SPACE
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static const int SUB_P = 1 << 1;
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#endif
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struct sed_cmd {
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/* address storage */
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@ -80,7 +85,11 @@ struct sed_cmd {
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unsigned int num_backrefs:4; /* how many back references (\1..\9) */
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/* Note: GNU/POSIX sed does not save more than nine backrefs, so
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* we only use 4 bits to hold the number */
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unsigned int sub_g:1; /* sed -e 's/foo/bar/g' (global) */
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#ifndef BB_FEATURE_SED_PATTERN_SPACE
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unsigned int sub_flags:1; /* sed -e 's/foo/bar/g' (global) */
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#else
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unsigned int sub_flags:2; /* sed -e 's/foo/bar/gp' (global/pattern) */
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#endif
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/* edit command (a,i,c) speicific field */
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char *editline;
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@ -244,8 +253,8 @@ static int parse_subst_cmd(struct sed_cmd *sed_cmd, const char *substr)
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/*
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* the string that gets passed to this function should look like this:
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* s/match/replace/gI
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* || | ||
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* s/match/replace/gIp
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* || | |||
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* mandatory optional
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*
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* (all three of the '/' slashes are mandatory)
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@ -285,11 +294,16 @@ static int parse_subst_cmd(struct sed_cmd *sed_cmd, const char *substr)
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while (substr[++idx]) {
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switch (substr[idx]) {
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case 'g':
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sed_cmd->sub_g = 1;
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sed_cmd->sub_flags = SUB_G;
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break;
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case 'I':
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cflags |= REG_ICASE;
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break;
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#ifdef BB_FEATURE_SED_PATTERN_SPACE
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case 'p':
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sed_cmd->sub_flags = SUB_P;
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break;
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#endif
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default:
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/* any whitespace or semicolon trailing after a s/// is ok */
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if (strchr("; \t\v\n\r", substr[idx]))
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@ -535,10 +549,17 @@ static int do_subst_command(const struct sed_cmd *sed_cmd, const char *line)
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/* if we can match the search string... */
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if (regexec(sed_cmd->sub_match, ptr, sed_cmd->num_backrefs+1, regmatch, 0) == 0) {
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/* print everything before the match, */
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for (i = 0; i < regmatch[0].rm_so; i++)
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for (i = 0; i < regmatch[0].rm_so; i++) {
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#ifdef BB_FEATURE_SED_PATTERN_SPACE
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if(!be_quiet || (sed_cmd->sub_flags & SUB_P))
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#endif
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fputc(ptr[i], stdout);
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}
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/* then print the substitution in its place */
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#ifdef BB_FEATURE_SED_PATTERN_SPACE
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if(!be_quiet || (sed_cmd->sub_flags & SUB_P))
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#endif
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print_subst_w_backrefs(ptr, sed_cmd->replace, regmatch);
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/* then advance past the match */
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@ -548,7 +569,7 @@ static int do_subst_command(const struct sed_cmd *sed_cmd, const char *line)
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altered++;
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/* if we're not doing this globally... */
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if (!sed_cmd->sub_g)
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if (!sed_cmd->sub_flags & SUB_G)
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break;
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}
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/* if we COULD NOT match the search string (meaning we've gone past
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@ -558,7 +579,11 @@ static int do_subst_command(const struct sed_cmd *sed_cmd, const char *line)
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}
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/* is there anything left to print? */
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#ifdef BB_FEATURE_SED_PATTERN_SPACE
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if (*ptr && (!be_quiet || sed_cmds->sub_flags & SUB_P))
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#else
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if (*ptr)
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#endif
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fputs(ptr, stdout);
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/* cleanup */
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@ -656,9 +681,14 @@ static void process_file(FILE *file)
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}
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/* we will print the line unless we were told to be quiet or if the
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* line was altered (via a 'd'elete or 's'ubstitution) */
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if (!be_quiet && !line_altered)
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/* we will print the line unless we were told to be quiet or if
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* the line was altered (via a 'd'elete or 's'ubstitution) */
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#ifndef BB_FEATURE_SED_PATTERN_SPACE
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if (!be_quiet &&!line_altered)
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#else
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/* we where specificly requested to print the output */
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if ((!be_quiet || (sed_cmds[i].sub_flags & SUB_P)) && !line_altered)
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#endif
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fputs(line, stdout);
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free(line);
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48
sed.c
48
sed.c
@ -63,6 +63,11 @@ extern char *optarg; /* ditto */
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/* options */
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static int be_quiet = 0;
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static const int SUB_G = 1 << 0;
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#ifdef BB_FEATURE_SED_PATTERN_SPACE
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static const int SUB_P = 1 << 1;
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#endif
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struct sed_cmd {
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/* address storage */
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@ -80,7 +85,11 @@ struct sed_cmd {
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unsigned int num_backrefs:4; /* how many back references (\1..\9) */
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/* Note: GNU/POSIX sed does not save more than nine backrefs, so
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* we only use 4 bits to hold the number */
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unsigned int sub_g:1; /* sed -e 's/foo/bar/g' (global) */
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#ifndef BB_FEATURE_SED_PATTERN_SPACE
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unsigned int sub_flags:1; /* sed -e 's/foo/bar/g' (global) */
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#else
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unsigned int sub_flags:2; /* sed -e 's/foo/bar/gp' (global/pattern) */
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#endif
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/* edit command (a,i,c) speicific field */
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char *editline;
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@ -244,8 +253,8 @@ static int parse_subst_cmd(struct sed_cmd *sed_cmd, const char *substr)
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/*
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* the string that gets passed to this function should look like this:
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* s/match/replace/gI
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* || | ||
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* s/match/replace/gIp
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* || | |||
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* mandatory optional
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*
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* (all three of the '/' slashes are mandatory)
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@ -285,11 +294,16 @@ static int parse_subst_cmd(struct sed_cmd *sed_cmd, const char *substr)
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while (substr[++idx]) {
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switch (substr[idx]) {
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case 'g':
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sed_cmd->sub_g = 1;
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sed_cmd->sub_flags = SUB_G;
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break;
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case 'I':
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cflags |= REG_ICASE;
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break;
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#ifdef BB_FEATURE_SED_PATTERN_SPACE
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case 'p':
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sed_cmd->sub_flags = SUB_P;
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break;
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#endif
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default:
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/* any whitespace or semicolon trailing after a s/// is ok */
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if (strchr("; \t\v\n\r", substr[idx]))
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@ -535,10 +549,17 @@ static int do_subst_command(const struct sed_cmd *sed_cmd, const char *line)
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/* if we can match the search string... */
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if (regexec(sed_cmd->sub_match, ptr, sed_cmd->num_backrefs+1, regmatch, 0) == 0) {
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/* print everything before the match, */
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for (i = 0; i < regmatch[0].rm_so; i++)
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for (i = 0; i < regmatch[0].rm_so; i++) {
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#ifdef BB_FEATURE_SED_PATTERN_SPACE
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if(!be_quiet || (sed_cmd->sub_flags & SUB_P))
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#endif
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fputc(ptr[i], stdout);
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}
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/* then print the substitution in its place */
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#ifdef BB_FEATURE_SED_PATTERN_SPACE
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if(!be_quiet || (sed_cmd->sub_flags & SUB_P))
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#endif
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print_subst_w_backrefs(ptr, sed_cmd->replace, regmatch);
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/* then advance past the match */
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@ -548,7 +569,7 @@ static int do_subst_command(const struct sed_cmd *sed_cmd, const char *line)
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altered++;
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/* if we're not doing this globally... */
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if (!sed_cmd->sub_g)
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if (!sed_cmd->sub_flags & SUB_G)
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break;
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}
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/* if we COULD NOT match the search string (meaning we've gone past
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@ -558,7 +579,11 @@ static int do_subst_command(const struct sed_cmd *sed_cmd, const char *line)
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}
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/* is there anything left to print? */
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#ifdef BB_FEATURE_SED_PATTERN_SPACE
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if (*ptr && (!be_quiet || sed_cmds->sub_flags & SUB_P))
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#else
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if (*ptr)
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#endif
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fputs(ptr, stdout);
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/* cleanup */
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@ -656,9 +681,14 @@ static void process_file(FILE *file)
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}
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/* we will print the line unless we were told to be quiet or if the
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* line was altered (via a 'd'elete or 's'ubstitution) */
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if (!be_quiet && !line_altered)
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/* we will print the line unless we were told to be quiet or if
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* the line was altered (via a 'd'elete or 's'ubstitution) */
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#ifndef BB_FEATURE_SED_PATTERN_SPACE
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if (!be_quiet &&!line_altered)
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#else
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/* we where specificly requested to print the output */
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if ((!be_quiet || (sed_cmds[i].sub_flags & SUB_P)) && !line_altered)
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#endif
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fputs(line, stdout);
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free(line);
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