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a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=stackframe.org; s=dkim1; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=RKHlFYQEvFhYMO/SO8aNWCGjXelzy2FG8sU89hTJDvs=; b=b196JUsGtXak3wJy9rX5JLFc1/ EpgTLuvrP6aNlKZCJGrOKzE4C3LN5p7uT1QnH3GvH9R2Vm18Fv7B/0NAKtSV8tC8PTNNIuDgdFCZc 7X5w84dOMKnxzBoG5Kxop/TkQ3wWG4MV4yTA78+onzY7aN04vTC9TzKaR9BXSqwMLvVPHDFiOwQOB KILRJfnoN2D3rIhA5M+FRVwbt/MfetN6se1YngV5vM253/mh7clXTW4C/ux5pTZqXvcis1aixIi8t soroB+CATnPp+XiuKih7WhlLx0t8/fkEFnxFBIBS+qz3eNZW/lRX0+Pwz6VbagtMXdkCLSefMg+Uc lPLvLzIA==; From: Sven Schnelle To: =?UTF-8?q?Alex=20Benn=C3=A9e?= , Alexandre Iooss , Mahmoud Mandour , Pierrick Bouvier Cc: qemu-devel@nongnu.org, deller@gmx.de, Sven Schnelle Subject: [PATCH v3 06/12] util/range: split up range_list_from_string() Date: Fri, 1 Mar 2024 18:46:03 +0100 Message-ID: <20240301174609.1964379-7-svens@stackframe.org> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240301174609.1964379-1-svens@stackframe.org> References: <20240301174609.1964379-1-svens@stackframe.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; 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charset="utf-8" Makes the code a bit easier to read and maintain. Signed-off-by: Sven Schnelle --- util/range.c | 119 ++++++++++++++++++++++++++++++--------------------- 1 file changed, 70 insertions(+), 49 deletions(-) diff --git a/util/range.c b/util/range.c index db535de9a7..8c463995e7 100644 --- a/util/range.c +++ b/util/range.c @@ -124,6 +124,74 @@ exit: *rev =3D out; } =20 +static const char *split_single_range(const char *r, const char **r2) +{ + char *range_op; + + range_op =3D strstr(r, "-"); + if (range_op) { + *r2 =3D range_op + 1; + return range_op; + } + range_op =3D strstr(r, "+"); + if (range_op) { + *r2 =3D range_op + 1; + return range_op; + } + range_op =3D strstr(r, ".."); + if (range_op) { + *r2 =3D range_op + 2; + return range_op; + } + return NULL; +} + +static int parse_single_range(const char *r, Error **errp, + uint64_t *lob, uint64_t *upb) +{ + const char *range_op, *r2, *e; + uint64_t r1val, r2val; + + range_op =3D split_single_range(r, &r2); + if (!range_op) { + error_setg(errp, "Bad range specifier"); + return 1; + } + if (qemu_strtou64(r, &e, 0, &r1val) + || e !=3D range_op) { + error_setg(errp, "Invalid number to the left of %.*s", + (int)(r2 - range_op), range_op); + return 1; + } + if (qemu_strtou64(r2, NULL, 0, &r2val)) { + error_setg(errp, "Invalid number to the right of %.*s", + (int)(r2 - range_op), range_op); + return 1; + } + + switch (*range_op) { + case '+': + *lob =3D r1val; + *upb =3D r1val + r2val - 1; + break; + case '-': + *upb =3D r1val; + *lob =3D r1val - (r2val - 1); + break; + case '.': + *lob =3D r1val; + *upb =3D r2val; + break; + default: + g_assert_not_reached(); + } + if (*lob > *upb) { + error_setg(errp, "Invalid range"); + return 1; + } + return 0; +} + void range_list_from_string(GList **out_ranges, const char *filter_spec, Error **errp) { @@ -136,60 +204,13 @@ void range_list_from_string(GList **out_ranges, const= char *filter_spec, } =20 for (i =3D 0; ranges[i]; i++) { - const char *r =3D ranges[i]; - const char *range_op, *r2, *e; - uint64_t r1val, r2val, lob, upb; - - range_op =3D strstr(r, "-"); - r2 =3D range_op ? range_op + 1 : NULL; - if (!range_op) { - range_op =3D strstr(r, "+"); - r2 =3D range_op ? range_op + 1 : NULL; - } - if (!range_op) { - range_op =3D strstr(r, ".."); - r2 =3D range_op ? range_op + 2 : NULL; - } - if (!range_op) { - error_setg(errp, "Bad range specifier"); - goto out; - } - - if (qemu_strtou64(r, &e, 0, &r1val) - || e !=3D range_op) { - error_setg(errp, "Invalid number to the left of %.*s", - (int)(r2 - range_op), range_op); - goto out; - } - if (qemu_strtou64(r2, NULL, 0, &r2val)) { - error_setg(errp, "Invalid number to the right of %.*s", - (int)(r2 - range_op), range_op); - goto out; - } + uint64_t lob, upb; =20 - switch (*range_op) { - case '+': - lob =3D r1val; - upb =3D r1val + r2val - 1; + if (parse_single_range(ranges[i], errp, &lob, &upb)) { break; - case '-': - upb =3D r1val; - lob =3D r1val - (r2val - 1); - break; - case '.': - lob =3D r1val; - upb =3D r2val; - break; - default: - g_assert_not_reached(); - } - if (lob > upb) { - error_setg(errp, "Invalid range"); - goto out; } *out_ranges =3D append_new_range(*out_ranges, lob, upb); } -out: g_strfreev(ranges); } =20 --=20 2.43.2