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author | 2015-11-30 01:45:08 -0500 | |
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committer | 2015-11-30 01:45:08 -0500 | |
commit | e8ec7aa8e38a93f5b034ac74cebce5de23710317 (patch) | |
tree | aa031937bf856c1f8d6ad7877b8d2cb0224da5ef /rubbos/app/httpd-2.0.64/srclib/pcre/pgrep.c | |
parent | cc40af334e619bb549038238507407866f774f8f (diff) |
upload http
JIRA: BOTTLENECK-10
Change-Id: I7598427ff904df438ce77c2819ee48ac75ffa8da
Signed-off-by: hongbotian <hongbo.tianhongbo@huawei.com>
Diffstat (limited to 'rubbos/app/httpd-2.0.64/srclib/pcre/pgrep.c')
-rw-r--r-- | rubbos/app/httpd-2.0.64/srclib/pcre/pgrep.c | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/rubbos/app/httpd-2.0.64/srclib/pcre/pgrep.c b/rubbos/app/httpd-2.0.64/srclib/pcre/pgrep.c new file mode 100644 index 00000000..ad1b87ea --- /dev/null +++ b/rubbos/app/httpd-2.0.64/srclib/pcre/pgrep.c @@ -0,0 +1,225 @@ +/************************************************* +* PCRE grep program * +*************************************************/ + +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <errno.h> +#include "config.h" +#include "pcre.h" + +#define FALSE 0 +#define TRUE 1 + +typedef int BOOL; + + + +/************************************************* +* Global variables * +*************************************************/ + +static pcre *pattern; +static pcre_extra *hints; + +static BOOL count_only = FALSE; +static BOOL filenames_only = FALSE; +static BOOL invert = FALSE; +static BOOL number = FALSE; +static BOOL silent = FALSE; +static BOOL whole_lines = FALSE; + + + +#if ! HAVE_STRERROR +/************************************************* +* Provide strerror() for non-ANSI libraries * +*************************************************/ + +/* Some old-fashioned systems still around (e.g. SunOS4) don't have strerror() +in their libraries, but can provide the same facility by this simple +alternative function. */ + +extern int sys_nerr; +extern char *sys_errlist[]; + +char * +strerror(int n) +{ +if (n < 0 || n >= sys_nerr) return "unknown error number"; +return sys_errlist[n]; +} +#endif /* HAVE_STRERROR */ + + + +/************************************************* +* Grep an individual file * +*************************************************/ + +static int +pgrep(FILE *in, char *name) +{ +int rc = 1; +int linenumber = 0; +int count = 0; +int offsets[99]; +char buffer[BUFSIZ]; + +while (fgets(buffer, sizeof(buffer), in) != NULL) + { + BOOL match; + int length = (int)strlen(buffer); + if (length > 0 && buffer[length-1] == '\n') buffer[--length] = 0; + linenumber++; + + match = pcre_exec(pattern, hints, buffer, length, 0, 0, offsets, 99) >= 0; + if (match && whole_lines && offsets[1] != length) match = FALSE; + + if (match != invert) + { + if (count_only) count++; + + else if (filenames_only) + { + fprintf(stdout, "%s\n", (name == NULL)? "<stdin>" : name); + return 0; + } + + else if (silent) return 0; + + else + { + if (name != NULL) fprintf(stdout, "%s:", name); + if (number) fprintf(stdout, "%d:", linenumber); + fprintf(stdout, "%s\n", buffer); + } + + rc = 0; + } + } + +if (count_only) + { + if (name != NULL) fprintf(stdout, "%s:", name); + fprintf(stdout, "%d\n", count); + } + +return rc; +} + + + + +/************************************************* +* Usage function * +*************************************************/ + +static int +usage(int rc) +{ +fprintf(stderr, "Usage: pgrep [-Vchilnsvx] pattern [file] ...\n"); +return rc; +} + + + + +/************************************************* +* Main program * +*************************************************/ + +int +main(int argc, char **argv) +{ +int i; +int rc = 1; +int options = 0; +int errptr; +const char *error; +BOOL filenames = TRUE; + +/* Process the options */ + +for (i = 1; i < argc; i++) + { + char *s; + if (argv[i][0] != '-') break; + s = argv[i] + 1; + while (*s != 0) + { + switch (*s++) + { + case 'c': count_only = TRUE; break; + case 'h': filenames = FALSE; break; + case 'i': options |= PCRE_CASELESS; break; + case 'l': filenames_only = TRUE; + case 'n': number = TRUE; break; + case 's': silent = TRUE; break; + case 'v': invert = TRUE; break; + case 'x': whole_lines = TRUE; options |= PCRE_ANCHORED; break; + + case 'V': + fprintf(stderr, "PCRE version %s\n", pcre_version()); + break; + + default: + fprintf(stderr, "pgrep: unknown option %c\n", s[-1]); + return usage(2); + } + } + } + +/* There must be at least a regexp argument */ + +if (i >= argc) return usage(0); + +/* Compile the regular expression. */ + +pattern = pcre_compile(argv[i++], options, &error, &errptr, NULL); +if (pattern == NULL) + { + fprintf(stderr, "pgrep: error in regex at offset %d: %s\n", errptr, error); + return 2; + } + +/* Study the regular expression, as we will be running it may times */ + +hints = pcre_study(pattern, 0, &error); +if (error != NULL) + { + fprintf(stderr, "pgrep: error while studing regex: %s\n", error); + return 2; + } + +/* If there are no further arguments, do the business on stdin and exit */ + +if (i >= argc) return pgrep(stdin, NULL); + +/* Otherwise, work through the remaining arguments as files. If there is only +one, don't give its name on the output. */ + +if (i == argc - 1) filenames = FALSE; +if (filenames_only) filenames = TRUE; + +for (; i < argc; i++) + { + FILE *in = fopen(argv[i], "r"); + if (in == NULL) + { + fprintf(stderr, "%s: failed to open: %s\n", argv[i], strerror(errno)); + rc = 2; + } + else + { + int frc = pgrep(in, filenames? argv[i] : NULL); + if (frc == 0 && rc == 1) rc = 0; + fclose(in); + } + } + +return rc; +} + +/* End */ |