string.c File Reference

#include "postgres.h"
#include "common/string.h"

Include dependency graph for string.c:

Go to the source code of this file.

Functions
bool	pg_str_endswith (const char *str, const char *end)
int	strtoint (const char *restrict str, char **restrict endptr, int base)
char *	pg_clean_ascii (const char *str, int alloc_flags)
bool	pg_is_ascii (const char *str)
int	pg_strip_crlf (char *str)

Function Documentation

pg_clean_ascii()

char * pg_clean_ascii	(	const char *	str,
		int	alloc_flags
	)

Definition at line 85 of file string.c.

{
    size_t      dstlen;
    char       *dst;
    const char *p;
    size_t      i = 0;
 
    /* Worst case, each byte can become four bytes, plus a null terminator. */
    dstlen = strlen(str) * 4 + 1;
 
#ifdef FRONTEND
    dst = malloc(dstlen);
#else
    dst = palloc_extended(dstlen, alloc_flags);
#endif
 
    if (!dst)
        return NULL;
 
    for (p = str; *p != '\0'; p++)
    {
 
        /* Only allow clean ASCII chars in the string */
        if (*p < 32 || *p > 126)
        {
            Assert(i < (dstlen - 3));
            snprintf(&dst[i], dstlen - i, "\\x%02x", (unsigned char) *p);
            i += 4;
        }
        else
        {
            Assert(i < dstlen);
            dst[i] = *p;
            i++;
        }
    }
 
    Assert(i < dstlen);
    dst[i] = '\0';
    return dst;
}

References Assert(), i, malloc, palloc_extended(), snprintf, and str.

Referenced by check_application_name(), check_cluster_name(), prepare_cert_name(), and ProcessStartupPacket().

pg_is_ascii()

bool pg_is_ascii

(

const char *

str

)

Definition at line 132 of file string.c.

{
    while (*str)
    {
        if (IS_HIGHBIT_SET(*str))
            return false;
        str++;
    }
    return true;
}

References IS_HIGHBIT_SET, and str.

Referenced by check_locale(), check_locale_name(), parse_key_value_arrays(), pg_import_system_collations(), and pg_saslprep().

pg_str_endswith()

bool pg_str_endswith	(	const char *	str,
		const char *	end
	)

Definition at line 31 of file string.c.

{
    size_t      slen = strlen(str);
    size_t      elen = strlen(end);
 
    /* can't be a postfix if longer */
    if (elen > slen)
        return false;
 
    /* compare the end of the strings */
    str += slen - elen;
    return strcmp(str, end) == 0;
}

References str.

Referenced by decide_file_action(), and StartupReplicationSlots().

pg_strip_crlf()

int pg_strip_crlf

(

char *

str

)

Definition at line 154 of file string.c.

{
    int         len = strlen(str);
 
    while (len > 0 && (str[len - 1] == '\n' ||
                       str[len - 1] == '\r'))
        str[--len] = '\0';
 
    return len;
}

References len, and str.

Referenced by adjust_data_dir(), check_exec(), get_control_data(), get_prompt(), get_sock_dir(), get_su_pwd(), getRestoreCommand(), passwordFromFile(), run_ssl_passphrase_command(), simple_prompt_extended(), and tokenize_auth_file().

strtoint()

int strtoint	(	const char *restrict	str,
		char **restrict	endptr,
		int	base
	)

Definition at line 50 of file string.c.

{
    long        val;
 
    val = strtol(str, endptr, base);
    if (val != (int) val)
        errno = ERANGE;
    return (int) val;
}

References str, and val.

Referenced by buildDefItem(), DecodeDateTime(), DecodeInterval(), DecodeNumber(), DecodeNumberField(), DecodeTime(), DecodeTimeCommon(), DecodeTimeOnly(), DecodeTimezone(), exec_command_watch(), get_path_all(), jsonb_get_element(), nodeTokenType(), option_parse_int(), process_integer_literal(), push_path(), px_crypt_shacrypt(), and setPathArray().